United States. Post Office Department & ProQuest (Firm). (1849). Reports of the Postmaster General, and of the Secretary of the Navy, in relation to the transmission of the mail in steamers between the United States and foreign countries. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Post Office Department and ProQuest (Firm). Reports of the Postmaster General, and of the Secretary of the Navy, in Relation to the Transmission of the Mail in Steamers Between the United States and Foreign Countries. Washington: [publisher not identified], 1849.
MLA (9th ed.) CitationUnited States. Post Office Department and ProQuest (Firm). Reports of the Postmaster General, and of the Secretary of the Navy, in Relation to the Transmission of the Mail in Steamers Between the United States and Foreign Countries. [publisher not identified], 1849.