United States. Post Office Department. (1916). Schedule of steamers appointed to convey U.S. mails to foreign countries during month of , 1916. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Post Office Department. Schedule of Steamers Appointed to Convey U.S. Mails to Foreign Countries During Month of , 1916. [Washington]: [publisher not identified], 1916.
MLA (9th ed.) CitationUnited States. Post Office Department. Schedule of Steamers Appointed to Convey U.S. Mails to Foreign Countries During Month of , 1916. [publisher not identified], 1916.
Warning: These citations may not always be 100% accurate.