APA (7th ed.) Citation

United States. Post Office Department & ProQuest (Firm). (1845). Mails -- Railroad and steamboat lines. Letter from the Postmaster General, transmitting statement of railroad and steamboat lines employed to carry mails of the United States. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Mails -- Railroad and Steamboat Lines. Letter from the Postmaster General, Transmitting Statement of Railroad and Steamboat Lines Employed to Carry Mails of the United States. Washington: [publisher not identified], 1845.

MLA (9th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Mails -- Railroad and Steamboat Lines. Letter from the Postmaster General, Transmitting Statement of Railroad and Steamboat Lines Employed to Carry Mails of the United States. [publisher not identified], 1845.