United States. Post Office Department & ProQuest (Firm). (1889). Letter from the Postmaster General, transmitting, in response to resolution of the Senate February 8, 1889, statement of changes in the Railway Mail Service. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Post Office Department and ProQuest (Firm). Letter from the Postmaster General, Transmitting, in Response to Resolution of the Senate February 8, 1889, Statement of Changes in the Railway Mail Service. Washington: [publisher not identified], 1889.
MLA (9th ed.) CitationUnited States. Post Office Department and ProQuest (Firm). Letter from the Postmaster General, Transmitting, in Response to Resolution of the Senate February 8, 1889, Statement of Changes in the Railway Mail Service. [publisher not identified], 1889.