In 1919, the Theodore Roosevelt Association (originally known as the Permanent Memorial National Committee) was founded by friends and supporters of Roosevelt. Soon renamed the Roosevelt Memorial Association (RMA), it was chartered in 1920 under Title 36 of the United States Code. In parallel with the RMA was an organization for women, The Women's Theodore Roosevelt Association, that had been founded in 1919 by an act of the New York State Assembly. Both organizations merged in 1956 under the current name. This organization preserved Roosevelt's papers in a 20-year project, preserved his photos and established four public sites: the reconstructed Theodore Roosevelt Birthplace National Historic Site, New York City, dedicated in 1923 and donated to the National Park Service in 1963; Theodore Roosevelt Memorial Park, Oyster Bay, Long Island, New York, dedicated in 1928 and given to the people of Oyster Bay; Theodore Roosevelt Island in the Potomac River in Washington, D.C., given to the federal government in 1932; Sagamore Hill, Roosevelt's Oyster Bay home, opened to the public in 1953 and was donated to the National Park Service in 1963 and is now the Sagamore Hill National Historic Site.
Dickinson State University in western North Dakota is attempting to create a presidential Library[1] called the Theodore Roosevelt Center. It has pursued the mission of digitizing and archiving all of TR’s letters, diaries, photographs, political cartoons, audio and video recordings, as well as other media.[2] In 2013, the North Dakota legislature appropriated $12 million to build an actual complex similar to the official libraries run by the National Archives. As of May 2017, the physical library is expected to be completed in 2019.[3]