United States. Post Office Department & ProQuest (Firm). (1868). Message of the President of the United States and accompanying documents, to the two Houses of Congress at the commencement of the third session of the Fortieth Congress. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Post Office Department and ProQuest (Firm). Message of the President of the United States and Accompanying Documents, to the Two Houses of Congress at the Commencement of the Third Session of the Fortieth Congress. Washington: [publisher not identified], 1868.
MLA (9th ed.) CitationUnited States. Post Office Department and ProQuest (Firm). Message of the President of the United States and Accompanying Documents, to the Two Houses of Congress at the Commencement of the Third Session of the Fortieth Congress. [publisher not identified], 1868.