Morris, Richard B. (1996). Encyclopedia of American History (Seventh изд.). Collins Reference. ISBN0062700553.
Peter C. Mancall; Gary B. Nash; Allan M. Winkler; Charlene Mires; John W. Jeffries, ур. (2009). Encyclopedia of American History. Facts on File. ISBN0816071365.
Stanley I. Kutler (2002). Dictionary of American History (Third изд.). Charles Scribners & Sons. ISBN0684805332.
Paul S. Boyer (2001). The Oxford Companion to United States History. Oxford University Press. ISBN0195082095.