APA (7th ed.) Citation

United States. Congress. House. Committee on Post Office and Post Roads, ProQuest (Firm), & United States. Post Office Department. (1864). Postal Matters at Philadelphia. Letter from the Postmaster General in relation to postal matters at Philadelphia. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Congress. House. Committee on Post Office and Post Roads, ProQuest (Firm), and United States. Post Office Department. Postal Matters at Philadelphia. Letter from the Postmaster General in Relation to Postal Matters at Philadelphia. Washington: [publisher not identified], 1864.

MLA (9th ed.) Citation

United States. Congress. House. Committee on Post Office and Post Roads, et al. Postal Matters at Philadelphia. Letter from the Postmaster General in Relation to Postal Matters at Philadelphia. [publisher not identified], 1864.