United States. National Archives and Records Service. Office of Records Management & Sheppard, M. (1955). Plain letters. The Office.
Chicago Style (17th ed.) CitationUnited States. National Archives and Records Service. Office of Records Management and Mona Sheppard. Plain Letters. Washington: The Office, 1955.
MLA (8th ed.) CitationUnited States. National Archives and Records Service. Office of Records Management and Mona Sheppard. Plain Letters. The Office, 1955.
Warning: These citations may not always be 100% accurate.