APA (7th ed.) Citation

United States. Post Office Department & ProQuest (Firm). (1858). Letter from the Postmaster General, in answer to a resolution of the House of Representatives, calling for information in regard to advertisements for mail proposals. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Letter from the Postmaster General, in Answer to a Resolution of the House of Representatives, Calling for Information in Regard to Advertisements for Mail Proposals. Washington: [publisher not identified], 1858.

MLA (9th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Letter from the Postmaster General, in Answer to a Resolution of the House of Representatives, Calling for Information in Regard to Advertisements for Mail Proposals. [publisher not identified], 1858.