United States. War Department. Office of the Under Secretary of War. (1907). [Letter from D.C. postmaster on delivery of registered mail]. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. War Department. Office of the Under Secretary of War. [Letter from D.C. Postmaster on Delivery of Registered Mail]. [Washington]: [publisher not identified], 1907.
MLA (9th ed.) CitationUnited States. War Department. Office of the Under Secretary of War. [Letter from D.C. Postmaster on Delivery of Registered Mail]. [publisher not identified], 1907.
Warning: These citations may not always be 100% accurate.