APA (7th ed.) Citation

United States. Post Office Department & ProQuest (Firm). (1851). Contingent Expenses -- Post Office Department. Letter from the Postmaster General, transmitting statements of the expenditure of the contingent fund of that department. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Contingent Expenses -- Post Office Department. Letter from the Postmaster General, Transmitting Statements of the Expenditure of the Contingent Fund of That Department. Washington: [publisher not identified], 1851.

MLA (9th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Contingent Expenses -- Post Office Department. Letter from the Postmaster General, Transmitting Statements of the Expenditure of the Contingent Fund of That Department. [publisher not identified], 1851.