The Official Congressional Directory (also known as Congressional Directory) is the official directory of the United States Congress, prepared by the Joint Committee on Printing (JCP) and published by the United States Government Printing Office (GPO) since 1887. Directories since the 41st Congress (1869–1871) are available online from the Government Publishing Office. Per federal statute (44 USC 721) the Directory is published and distributed during the first session of each new Congress.^[1] It is a designated essential title distributed to Federal depository libraries and the current edition is available for purchase from GPO.

The foreword notes: The Congressional Directory is one of the oldest working handbooks within the United States Government. While there were unofficial directories for Congress in one form or another beginning with the 1st Congress in 1789, the Congressional Directory published in 1847 for the 30th Congress is considered by scholars and historians to be the first official edition because it was the first to be ordered and paid for by Congress. With the addition of biographical sketches of legislators in 1867, the Congressional Directory attained its modern format.^[2]

Each bi-annual edition includes:

• Short biographies of each member of the Senate and House, listed by state or district.
• Committee memberships, terms of service, administrative assistants and/or secretaries, and room and telephone numbers for Members of Congress.
• Lists officials of the courts, military establishments, and other Federal departments and agencies, including D.C. government officials, governors of states and territories, foreign diplomats, and members of the press, radio, and television galleries.

• Daniel Rapine (1816). Congressional Directory for the Second Session of the Fourteenth Congress. Washington City.
• Daniel Rapine (1822). Congressional Directory for the Second Session of the Seventeenth Congress. Washington City.
• Daniel Rapine (1827). Congressional Directory for the First Session of the Twentieth Congress. Washington City.
• S.A. Elliot (1829). Congressional Directory for the First Session of the Twenty-First Congress. City of Washington.
• Jonathan Elliot (1833). Congressional Directory for the Second Session of the Twenty-Second Congress. City of Washington.
• Jonathan Elliot (1834). Congressional Directory for the First Session of the Twenty-Third Congress. City of Washington.
• J. Elliot (1838). Congressional Directory for the Third Session of the Twenty-Fifth Congress. City of Washington.
• Thomas Allen (1839). Congressional Directory for the Third Session of the Twenty-Fifth Congress. City of Washington.
• George Watterston (1840). A picture of Washington: giving a description of all the public buildings, grounds, etc... to which is added, a correct map of the city, plans of the floors of each house of Congress, etc..., and a Congressional directory for the first session of the 26th Congress. Washington D.C.: William W. Morriston.
• Congressional Directory for the Second Session of the Twenty-Sixth Congress. City of Washington. 1840.
• Peter Force (1841). Congressional Directory for the First Session of the Twenty-Seventh Congress. Washington D.C.: House of Representatives.
• Congressional Directory for the First Session of the Twenty-Eighth Congress. Washington D.C.: William Quereau Force. 1844.
• William Quereau Force (1845). The Washington Guide containing a Congressional Directory for the Second Session of the 28th Congress. Washington D.C.: W. Q. Force.
• Congressional Directory for the First Session of the Twenty-Ninth Congress. Washington D.C.: J & G. S Gideon. 1846.
• Congressional Directory for the First Session of the Twenty-Ninth Congress (New ed.). Washington D.C.: J & G. S Gideon. 1846.
• Congressional Directory for the Second Session of the Twenty-Ninth Congress. Washington D.C.: J & G. S Gideon. 1847.
• William Quereau Force (1848). The Washington Guide containing a Congressional Directory for the first Session of the 30th Congress. Washington D.C.: W. Q. Force.
• Postmaster of the House of Representatives (1849). Congressional Directory for the Second Session of the Thirtieth Congress. Washington D.C.: J. & G. S. Gideon and Company Printers.
• Postmaster of the House of Representatives (1850). Congressional Directory for the First Session of the Thirty-First Congress. Washington D.C.: Gideon and Company Printers.
• William Quereau Force (1850). The Washington Guide containing a Congressional Directory for the first Session of the 31st Congress. Washington D.C.: W. Q. Force.
• Postmaster of the House of Representatives (1850). Congressional Directory for the First Session of the Thirty-First Congress (2nd ed.). Washington D.C.: Gideon and Company Printers.
• Postmaster of the House of Representatives (1852). Congressional Directory for the First Session of the Thirty-Second Congress (2nd ed.). Washington D.C.: Gideon and Company Printers.
• Congressional Directory for the Second Session of the Thirty-Second Congress. Washington D.C.: Alfred Hunter. 1853.
• Postmaster of the House of Representatives (1854). Congressional Directory for the First Session of the Thirty-Third Congress. Washington D.C.: Gideon and Company Printers.
• Postmaster of the House of Representatives (1855). Congressional Directory for the Second Session of the Thirty-Third Congress. Washington D.C.: Gideon and Company Printers.
• Postmaster of the House of Representatives (1856). Congressional Directory for the First Session of the Thirty-Fourth Congress. Washington D.C.: Gideon and Company Printers.
• Postmaster of the House of Representatives (1856). Congressional Directory for the Third Session of the Thirty-Fourth Congress. Washington D.C.: Gideon and Company Printers.
• Postmaster of the House of Representatives (1858). Congressional Directory for the First Session of the Thirty-Fifth Congress (1st ed.). Washington D.C.{{cite book}}: CS1 maint: location missing publisher (link)

• J.A. Winebarger (1861). Department and Congressional Directory for the Second Session of the Thirty-Sixth Congress. Washington D.C.: C. Bohn.
• Postmaster of the House of Representatives (1861). Congressional Directory for the Second Session of the Thirty-Seventh Congress (1st ed.). Washington D.C.: U.S. House of Representatives.
• Postmaster of the House of Representatives (1862). Congressional Directory for the Second Session of the Thirty-Seventh Congress (2nd ed.). Washington D.C.: U.S. House of Representatives.
• United States Congress (1863). Congressional Directory for the Third Session of the Thirty-Seventh Congress (1st ed.). Washington D.C.: U.S. Government Printing Office.
• United States Congress (1864). Congressional Directory for the First Session of the Thirty-Eighth Congress (1st ed.). Washington D.C.: U.S. Government Printing Office.
• United States Congress (1865). Congressional Directory for the Second Session of the Thirty-Eighth Congress (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Congressional Directory for the First Session of the Thirty-Ninth Congress (1st ed.). Washington D.C.: C. Bohn. 1866.
• Ben. Perley Poore (1867). Congressional Directory for the Second Session of the Thirty-Ninth Congress (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1868). Congressional Directory for the Second Session of the Fortieth Congress (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1869). Congressional Directory for the Third Session of the Fortieth Congress (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1869). Congressional Directory for the First Session of the Forty-First Congress (2nd ed.). Washington D.C.: U.S. Government Printing Office. hdl:2027/nyp.33433081796686.
• Ben. Perley Poore (1869). Congressional Directory for the First Session of the Forty-First Congress (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1869). Congressional Directory for the Second Session of the Forty-First Congress (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1870). Congressional Directory for the Second Session of the Forty-First Congress (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1870). Congressional Directory for the Third Session of the Forty-First Congress (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1871). Congressional Directory for the Third Session of the Forty-First Congress (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1871). Congressional Directory: Forty-Second Congress - First Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1872). Congressional Directory: Forty-Second Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1872). Congressional Directory: Forty-Second Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1872). Congressional Directory: Forty-Second Congress - Third Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1873). Congressional Directory: Forty-Second Congress - Third Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1873). Congressional Directory: Forty-Third Congress - First Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1874). Congressional Directory: Forty-Third Congress - First Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1874). Congressional Directory: Forty-Third Congress - First Session (4th ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1874). Congressional Directory: Forty-Third Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1875). Congressional Directory: Forty-Third Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1875). Congressional Directory: Forty-Fourth Congress - First Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1876). Congressional Directory: Forty-Fourth Congress - First Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1876). Congressional Directory: Forty-Fourth Congress - First Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1876). Congressional Directory: Forty-Fourth Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1877). Congressional Directory: Forty-Fourth Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1877). Congressional Directory: Forty-Fifth Congress - First Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1877). Congressional Directory: Forty-Fifth Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1878). Congressional Directory: Forty-Fifth Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1878). Congressional Directory: Forty-Fifth Congress - Second Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1878). Congressional Directory: Forty-Fifth Congress - Third Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1879). Congressional Directory: Forty-Fifth Congress - Third Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1879). Congressional Directory: Forty-Sixth Congress - First Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• F.A. Richardson (1879). Congressional Directory: Forty-Sixth Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.

• F.A. Richardson (1880). Congressional Directory: Forty-Sixth Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• F.A. Richardson (1880). Congressional Directory: Forty-Sixth Congress - Second Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• F.A. Richardson (1880). Congressional Directory: Forty-Sixth Congress - Third Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• F.A. Richardson (1881). Congressional Directory: Forty-Sixth Congress - Third Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1881). Congressional Directory: Forty-Seventh Congress - First Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1882). Congressional Directory: Forty-Seventh Congress - First Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1882). Congressional Directory: Forty-Seventh Congress - First Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1882). Congressional Directory: Forty-Seventh Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1883). Congressional Directory: Forty-Seventh Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1883). Congressional Directory: Forty-Eighth Congress - First Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1884). Congressional Directory: Forty-Eighth Congress - First Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1884). Congressional Directory: Forty-Eighth Congress - First Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1884). Congressional Directory: Forty-Eighth Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1885). Congressional Directory: Forty-Eighth Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1885). Congressional Directory: Forty-Ninth Congress - First Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1886). Congressional Directory: Forty-Ninth Congress - First Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1886). Congressional Directory: Forty-Ninth Congress - First Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1886). Congressional Directory: Forty-Ninth Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Ben. Perley Poore (1887). Congressional Directory: Forty-Ninth Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• W.H. Michael (1887). Official Congressional Directory: Fiftieth Congress - First Session (1st ed.). Washington D.C.: U.S. Government Printing Office. ISBN 9780331696653.
• W.H. Michael (1888). Official Congressional Directory: Fiftieth Congress - First Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• W.H. Michael (1888). Official Congressional Directory: Fiftieth Congress - First Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• W.H. Michael (1888). Official Congressional Directory: Fiftieth Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• W.H. Michael (1889). Official Congressional Directory: Fiftieth Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• W.H. Michael (1889). Official Congressional Directory: Fifty-First Congress - First Session (1st ed.). Washington D.C.: U.S. Government Printing Office.

• W.H. Michael (1890). Official Congressional Directory: Fifty-First Congress - First Session (2nd ed.). Washington D.C: U.S. Government Printing Office.
• W.H. Michael (1890). Official Congressional Directory: Fifty-First Congress - First Session (3rd ed.). Washington D.C: U.S. Government Printing Office.
• W.H. Michael (1890). Official Congressional Directory: Fifty-First Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• W.H. Michael (1891). Official Congressional Directory: Supplement. Washington D.C.: U.S. Government Printing Office.
• W.H. Michael (1891). Official Congressional Directory: Fifty-First Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• W.H. Michael (1891). Official Congressional Directory: Fifty-Second Congress - First Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• W.H. Michael (1892). Official Congressional Directory: Fifty-Second Congress - First Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• W.H. Michael (1892). Official Congressional Directory: Fifty-Second Congress - First Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• W.H. Michael (1892). Official Congressional Directory: Fifty-Second Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• W.H. Michael (1893). Official Congressional Directory: Fifty-Second Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• W.H. Michael and Francis M. Cox (1893). Official Congressional Directory: Fifty-Third Congress - Extraordinary Session (Special ed.). Washington D.C.: U.S. Government Printing Office.
• Francis M. Cox (1893). Official Congressional Directory: Fifty-Third Congress - First Session (Special ed.). Washington D.C.: U.S. Government Printing Office.
• Francis M. Cox (1893). Official Congressional Directory: Fifty-Third Congress - First Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Francis M. Cox (1893). Official Congressional Directory: Fifty-Third Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Francis M. Cox (1894). Official Congressional Directory: Fifty-Third Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Francis M. Cox (1894). Official Congressional Directory: Fifty-Third Congress - Second Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Francis M. Cox (1894). Official Congressional Directory: Fifty-Third Congress - Third Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Francis M. Cox (1895). Official Congressional Directory: Fifty-Third Congress - Third Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Francis M. Cox (1895). Official Congressional Directory: Fifty-Fourth Congress - First Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Francis M. Cox (1896). Official Congressional Directory: Fifty-Fourth Congress - First Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Pitman Pulsifer (1896). Official Congressional Directory: Fifty-Fourth Congress - First Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Pitman Pulsifer (1896). Official Congressional Directory: Fifty-Fourth Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Pitman Pulsifer (1897). Official Congressional Directory: Fifty-Fourth Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Pitman Pulsifer (1897). Official Congressional Directory: Fifty-Fifth Congress - Extraordinary Session (Special ed.). Washington D.C.: U.S. Government Printing Office.
• Albert H. Washburn (1897). Official Congressional Directory: Fifty-Fifth Congress - Extraordinary Session (Second Special ed.). Washington D.C.: U.S. Government Printing Office.
• L.A. Coolidge (1897). Official Congressional Directory: Fifty-Fifth Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• L.A. Coolidge (1897). Official Congressional Directory: Fifty-Fifth Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1898). Official Congressional Directory: Fifty-Fifth Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1898). Official Congressional Directory: Fifty-Fifth Congress - Third Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• The Clerk of Printing Records (1899). Official Congressional Directory: Fifty-Fifth Congress - Third Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• The Clerk of Printing Records (1899). Official Congressional Directory: Fifty-Sixth Congress - First Session (1st ed.). Washington D.C.: U.S. Government Printing Office.

• The Clerk of Printing Records (1900). Official Congressional Directory: Fifty-Sixth Congress - First Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1900). Official Congressional Directory: Fifty-Sixth Congress - First Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1900). Official Congressional Directory: Fifty-Sixth Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1901). Official Congressional Directory: Fifty-Sixth Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1901). Official Congressional Directory: Fifty-Seventh Congress - First Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1902). Official Congressional Directory: Fifty-Seventh Congress - First Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1902). Official Congressional Directory: Fifty-Seventh Congress - First Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1902). Official Congressional Directory: Fifty-Seventh Congress - Second Session (PDF) (1st ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1903). Official Congressional Directory: Fifty-Seventh Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1903). Official Congressional Directory: Fifty-Eighth Congress - Special Session (PDF) (Special ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1903). Official Congressional Directory: Fifty-Eighth Congress - Extraordinary Session (Special ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1903). Official Congressional Directory: Fifty-Eighth Congress - Second Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1904). Official Congressional Directory: Fifty-Eighth Congress - Second Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1904). Official Congressional Directory: Fifty-Eighth Congress - Second Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1904). Official Congressional Directory: Fifty-Eighth Congress - Third Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1905). Official Congressional Directory: Fifty-Eighth Congress - Third Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1905). Official Congressional Directory: 59th Congress - 1st Session (PDF) (1st ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1906). Official Congressional Directory: 59th Congress - 1st Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1906). Official Congressional Directory: 59th Congress - 1st Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1906). Official Congressional Directory: 59th Congress - 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1907). Official Congressional Directory: 59th Congress - 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1907). Official Congressional Directory: 60th Congress - 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1908). Official Congressional Directory: 60th Congress - 1st Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1908). Official Congressional Directory: 60th Congress - 1st Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1908). Official Congressional Directory: 60th Congress - 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1909). Official Congressional Directory: 60th Congress - 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1909). Official Congressional Directory: 61st Congress - 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1909). Official Congressional Directory: 61st Congress - 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1910). Official Congressional Directory: 61st Congress - 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• A.J. Halford (1910). Official Congressional Directory: 61st Congress - 2d Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Official Congressional Directory: 61st Congress - 3d Session (1st ed.). Washington D.C.: U.S. Government Printing Office. 1910.
• James S. Henry (1911). Official Congressional Directory: 61st Congress - 3d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• James S. Henry (1911). Official Congressional Directory: 62d Congress - 1st Session. Washington D.C.: U.S. Government Printing Office.
• James B. Bell (1911). Official Congressional Directory: 62d Congress - 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• James B. Bell (1912). Official Congressional Directory: 62d Congress - 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• James B. Bell (1912). Official Congressional Directory: 62d Congress - 2d Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• James B. Bell (1912). Official Congressional Directory: 62d Congress - 3d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• James B. Bell (1913). Official Congressional Directory: 62d Congress - 3d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• James B. Bell (1913). Official Congressional Directory: 63d Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Edgar E. Mountjoy (1913). Official Congressional Directory: 63d Congress, 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Edgar E. Mountjoy (1914). Official Congressional Directory: 63d Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Edgar E. Mountjoy (1914). Official Congressional Directory: 63d Congress, 2d Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Edgar E. Mountjoy (1914). Official Congressional Directory: 63d Congress, 3d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Edgar E. Mountjoy (1915). Official Congressional Directory: 63d Congress, 3d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Edgar E. Mountjoy (1915). Official Congressional Directory: 64th Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Edgar E. Mountjoy (1916). Official Congressional Directory: 64th Congress, 1st Session (2nd ed.). Washington D.C.: U.S. Government Printing Office. hdl:2027/uc1.l0075858456.
• Edgar E. Mountjoy (1916). Official Congressional Directory: 64th Congress, 1st Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Edgar E. Mountjoy (1916). Official Congressional Directory: 64th Congress, 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Edgar E. Mountjoy (1917). Official Congressional Directory: 64th Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Edgar E. Mountjoy (1917). Official Congressional Directory: 65th Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Edgar E. Mountjoy (1917). Official Congressional Directory: 65th Congress, 2d Session (PDF) (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Edgar E. Mountjoy (1918). Official Congressional Directory: 65th Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Edgar E. Mountjoy (1918). Official Congressional Directory: 65th Congress, 2d Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Jessie E. Mountjoy (1918). Official Congressional Directory: 65th Congress, 3d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Jessie E. Mountjoy (1919). Official Congressional Directory: 65th Congress, 3d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Francis G. Matson (1919). Official Congressional Directory: 66th Congress, 1st Session. Washington D.C.: U.S. Government Printing Office.
• Francis G. Matson (1919). Official Congressional Directory: 66th Congress, 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.

• Francis G. Matson (1920). Official Congressional Directory: 66th Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Francis G. Matson (1920). Official Congressional Directory: 66th Congress, 2d Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Francis G. Matson (1920). Official Congressional Directory: 66th Congress, 3d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Francis G. Matson (1921). Official Congressional Directory: 66th Congress, 3d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Francis G. Matson (1921). Official Congressional Directory: 67th Congress, 1st Session. Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1921). Official Congressional Directory: 67th Congress, 2d Session. Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1922). Official Congressional Directory: 67th Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1922). Official Congressional Directory: 67th Congress, 2d Session (3rd ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1922). Official Congressional Directory: 67th Congress, 3d & 4th Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1923). Official Congressional Directory: 67th Congress, 4th Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1923). Official Congressional Directory: 68th Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1924). Official Congressional Directory: 68th Congress, 1st Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1924). Official Congressional Directory: 68th Congress, 1st Session (3rd ed.). Washington D.C.: U.S. Government Printing Office. hdl:2027/njp.32101072368978.
• Elmer C. Hess (1924). Official Congressional Directory: 68th Congress, 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1925). Official Congressional Directory: 68th Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1925). Official Congressional Directory: 69th Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1926). Official Congressional Directory: 69th Congress, 1st Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1926). Official Congressional Directory: 69th Congress, 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1927). Official Congressional Directory: 69th Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1927). Official Congressional Directory: 70th Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1928). Official Congressional Directory: 70th Congress, 1st Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1928). Official Congressional Directory: 70th Congress, 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1929). Official Congressional Directory: 70th Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1929). Official Congressional Directory: 71st Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1929). Official Congressional Directory: 71st Congress, 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Elmer C. Hess (1930). Official Congressional Directory: 71st Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• A.B. Heyser (1930). Official Congressional Directory: 71st Congress, 3d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• A.B. Heyser (1931). Official Congressional Directory: 71st Congress, 3d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• A.B. Heyser (1931). Official Congressional Directory: 72d Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• E.F. Caldwell (1932). Official Congressional Directory: 72d Congress, 1st Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• E.F. Caldwell (1932). Official Congressional Directory: 72d Congress, 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• E.F. Caldwell (1933). Official Congressional Directory: 72d Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Official Congressional Directory: 73d Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office. 1933.
• Official Congressional Directory: 73d Congress, 1st Session - Supplemental (1st ed.). Washington D.C.: U.S. Government Printing Office. 1933.
• Official Congressional Directory: 73d Congress, 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office. 1933.
• Official Congressional Directory: 73d Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office. 1934.
• C.B. Deane (1934). Official Congressional Directory: 74th Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• C.B. Deane (1935). Official Congressional Directory: 74th Congress, 1st Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• C.B. Deane (1935). Official Congressional Directory: 74th Congress, 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• C.B. Deane (1936). Official Congressional Directory: 74th Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• C.B. Deane (1937). Official Congressional Directory: 75th Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• C.B. Deane (1937). Official Congressional Directory: 75th Congress, 1st Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• C.B. Deane (1937). Official Congressional Directory: 75th Congress, 3d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• C.B. Deane (1938). Official Congressional Directory: 75th Congress, 3d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• C.B. Deane (1939). Official Congressional Directory: 76th Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• J.B. Bricken (1939). Official Congressional Directory: 76th Congress, 1st Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.

• S.A. Lokey (1940). Official Congressional Directory: 76th Congress, 3d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• S.A. Lokey (1940). Official Congressional Directory: 76th Congress, 3d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Lewis J. Lawson Jr. (1941). Official Congressional Directory: 77th Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Lewis J. Lawson Jr. (1941). Official Congressional Directory: 77th Congress, 1st Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• S.A. Lokey (1942). Official Congressional Directory: 77th Congress, 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Robert W. Hasty (1942). Official Congressional Directory: 77th Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Robert W. Hasty (1943). Official Congressional Directory: 78th Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Robert W. Hasty (1943). Official Congressional Directory: 78th Congress, 1st Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Robert W. Hasty (1944). Official Congressional Directory: 78th Congress, 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• R.E. De Sear (1944). Official Congressional Directory: 78th Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• R.E. De Sear (1945). Official Congressional Directory: 79th Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• John H. Pinson (1945). Official Congressional Directory: 79th Congress, 1st Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• John H. Pinson (1946). Official Congressional Directory: 79th Congress, 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office. hdl:2027/uc1.l0079661732.
• J. Hal McCall (1946). Official Congressional Directory for the 79th Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• J. Hal McCall (1947). Official Congressional Directory for the 80th Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Marshall F. Camp (1947). Official Congressional Directory: 80th Congress, 1st Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Roy C. Gutch (1948). Official Congressional Directory: 80th Congress, 2d Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Benjamin Ellsworth (1948). Official Congressional Directory: 80th Congress, 2d Session (2nd ed.). Washington D.C.: U.S. Government Printing Office.
• Gilbert R. West (1949). Official Congressional Directory: 81st Congress, 1st Session (1st ed.). Washington D.C.: U.S. Government Printing Office.
• Official Congressional Directory: 81st Congress, 2d Session. Washington D.C.: U.S. Government Printing Office. 1950.
• Official Congressional Directory: 82d Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1951.
• Official Congressional Directory: 82d Congress, 2d Session. Washington D.C.: U.S. Government Printing Office. 1952.
• Official Congressional Directory: 83d Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1953.
• Official Congressional Directory: 83d Congress, 2d Session. Washington D.C.: U.S. Government Printing Office. 1954.
• Official Congressional Directory: 84th Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1955.
• Official Congressional Directory: 84th Congress, 2d Session. Washington D.C.: U.S. Government Printing Office. 1956.
• Official Congressional Directory: 85th Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1957.
• Official Congressional Directory: 85th Congress, 2d Session. Washington D.C.: U.S. Government Printing Office. 1958.
• Official Congressional Directory: 86th Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1959.

• Official Congressional Directory: 86th Congress, 2d Session. Washington D.C.: U.S. Government Printing Office. 1960.
• Official Congressional Directory: 87th Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1961.
• Official Congressional Directory: 87th Congress, 2d Session. Washington D.C.: U.S. Government Printing Office. 1962.
• Official Congressional Directory: 88th Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1963.
• Official Congressional Directory: 88th Congress, 2d Session. Washington D.C.: U.S. Government Printing Office. 1964.
• Official Congressional Directory: 89th Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1965.
• Official Congressional Directory: 89th Congress, 2d Session. Washington D.C.: U.S. Government Printing Office. 1966.
• Official Congressional Directory: 90th Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1967.
• Official Congressional Directory: 90th Congress, 2d Session. Washington D.C.: U.S. Government Printing Office. 1968.
• Official Congressional Directory: 91st Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1969.
• Official Congressional Directory: 91st Congress, 2d Session. Washington D.C.: U.S. Government Printing Office. 1970.
• Official Congressional Directory: 92nd Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1971.
• Official Congressional Directory: 92nd Congress, 2nd Session. Washington D.C.: U.S. Government Printing Office. 1972.
• Official Congressional Directory: 93rd Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1973.
• Official Congressional Directory: 93rd Congress, 2nd Session. Washington D.C.: U.S. Government Printing Office. 1974.
• Official Congressional Directory: 94th Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1975.
• 1976 Official Congressional Directory: 94th Congress, 2nd Session. Washington D.C.: U.S. Government Printing Office. 1976.
• 1977 Official Congressional Directory: 95th Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1977.
• 1978 Official Congressional Directory Supplement: 95th Congress, 2nd Session. Washington D.C.: U.S. Government Printing Office. 1978.
• 1979 Official Congressional Directory: 96th Congress, 1st Session. Washington D.C.: U.S. Government Printing Office. 1979.

• 1981 Official Congressional Directory: 97th Congress. Washington D.C.: U.S. Government Printing Office. 1981.
• 1983-1984 Official Congressional Directory: 98th Congress. Washington D.C.: U.S. Government Printing Office. 1983.
• 1985-1986 Official Congressional Directory: 99th Congress. Washington D.C.: U.S. Government Printing Office. 1985.
• 1987-1988 Official Congressional Directory: 100th Congress. Washington D.C.: U.S. Government Printing Office. 1987.
• 1989-1990 Official Congressional Directory: 101st Congress. Washington D.C.: U.S. Government Printing Office. 1989.
• 1991-1992 Official Congressional Directory: 102d Congress. Washington D.C.: U.S. Government Printing Office. 1991.
• 1993-1994 Official Congressional Directory: 103d Congress. Washington D.C.: U.S. Government Printing Office. 1993. hdl:2027/msu.31293012374421.
• 1995-1996 Official Congressional Directory: 104th Congress. Washington D.C.: U.S. Government Printing Office. 1995. hdl:2027/uc1.31210012145981.
• 1997-1998 Official Congressional Directory: 105th Congress. Washington D.C.: U.S. Government Printing Office. 1997. hdl:2027/msu.31293012426205.
• 1999-2000 Official Congressional Directory: 106th Congress. Washington D.C.: U.S. Government Printing Office. 1999.

• 1999-2000 Official Congressional Directory: 106th Congress (PDF) (1st Revised ed.). Washington D.C.: U.S. Government Printing Office. 2000.
• 1999-2000 Official Congressional Directory: 106th Congress (PDF) (2nd Revised ed.). Washington D.C.: U.S. Government Printing Office. 2000.
• 2001-2002 Official Congressional Directory: 107th Congress. Washington D.C.: U.S. Government Printing Office. 2001.
• 2001-2002 Official Congressional Directory: 107th Congress (Revised) (PDF). Washington D.C.: U.S. Government Printing Office. 2002.
• 2003-2004 Official Congressional Directory: 108th Congress. Washington D.C.: U.S. Government Printing Office. 2003.
• 2003-2004 Official Congressional Directory: 108th Congress (PDF) (1st Revised ed.). Washington D.C.: U.S. Government Printing Office. 2004.
• 2003-2004 Official Congressional Directory: 108th Congress (PDF) (2nd Revised ed.). Washington D.C.: U.S. Government Printing Office. 2004.
• 2005-2006 Official Congressional Directory: 109th Congress. Washington D.C.: U.S. Government Printing Office. 2005.
• 2007-2008 Official Congressional Directory: 110th Congress. Washington D.C.: U.S. Government Printing Office. 2007.
• 2007-2008 Official Congressional Directory: 110th Congress (Revised) (PDF). Washington D.C.: U.S. Government Printing Office. 2008.
• 2009-2010 Official Congressional Directory: 111th Congress. Washington D.C.: U.S. Government Printing Office. 2009.
• 2011-2012 Official Congressional Directory: 112th Congress. Washington D.C.: U.S. Government Printing Office. 2011.
• 2013-2014 Official Congressional Directory: 113th Congress. Washington D.C.: U.S. Government Printing Office. 2014.
• 2015-2016 Official Congressional Directory: 114th Congress (PDF). Washington D.C.: U.S. Government Printing Office. 2016.
• 2017-2018 Official Congressional Directory: 115th Congress (PDF). Washington D.C.: U.S. Government Printing Office. 2018.
• 2019-2020 Official Congressional Directory: 116th Congress (PDF). Washington D.C.: U.S. Government Printing Office. 2020.
• 2021-2022 Official Congressional Directory: 117th Congress (PDF). Washington D.C.: U.S. Government Printing Office. 2022.
• 2023-2024 Official Congressional Directory: 118th Congress (PDF). Washington D.C.: U.S. Government Printing Office. 2024.

• Hathi Trust. Official Congressional Directory, fulltext, various dates; also here
• Government Publishing Office. Official Congressional Directory, fulltext, various dates.