APA (7th ed.) Citation

United States. Post Office Department & ProQuest (Firm). (1838). Letter from the Postmaster General, transmitting a statement of all mails established within the year ending 1st of July, 1837, of allowances made to contractors, and curtailments of mail transportation and pay, &c. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Letter from the Postmaster General, Transmitting a Statement of All Mails Established Within the Year Ending 1st of July, 1837, of Allowances Made to Contractors, and Curtailments of Mail Transportation and Pay, &c. Washington: [publisher not identified], 1838.

MLA (9th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Letter from the Postmaster General, Transmitting a Statement of All Mails Established Within the Year Ending 1st of July, 1837, of Allowances Made to Contractors, and Curtailments of Mail Transportation and Pay, &c. [publisher not identified], 1838.