United States. Congress. House. Committee on Post Office and Post Roads & ProQuest (Firm). (1938). Transportation of letters outside of the mails. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Congress. House. Committee on Post Office and Post Roads and ProQuest (Firm). Transportation of Letters Outside of the Mails. Washington: [publisher not identified], 1938.
MLA (9th ed.) CitationUnited States. Congress. House. Committee on Post Office and Post Roads and ProQuest (Firm). Transportation of Letters Outside of the Mails. [publisher not identified], 1938.
Warning: These citations may not always be 100% accurate.