APA (7th ed.) Citation

United States. Post Office Department & ProQuest (Firm). (1856). Letter from the Postmaster General, transmitting an abstract of offers for carrying mails, and a report of all contracts for carrying the mails, &c. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Letter from the Postmaster General, Transmitting an Abstract of Offers for Carrying Mails, and a Report of All Contracts for Carrying the Mails, &c. Washington: [publisher not identified], 1856.

MLA (9th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Letter from the Postmaster General, Transmitting an Abstract of Offers for Carrying Mails, and a Report of All Contracts for Carrying the Mails, &c. [publisher not identified], 1856.