United States. Postmaster General, United States. National Archives and Records Service, & United States. Post Office Dept. (1965). Letters sent by the Postmaster General, 1789-1836. National Archives and Records Service, General Services Administration.
Chicago Style (17th ed.) CitationUnited States. Postmaster General, United States. National Archives and Records Service, and United States. Post Office Dept. Letters Sent by the Postmaster General, 1789-1836. Washington, D.C.: National Archives and Records Service, General Services Administration, 1965.
MLA (8th ed.) CitationUnited States. Postmaster General, et al. Letters Sent by the Postmaster General, 1789-1836. National Archives and Records Service, General Services Administration, 1965.
Warning: These citations may not always be 100% accurate.