The classes of mail.
By: Prepared for the use of the Subcommittees on Postal Rates, Postal Operations [and] Postal Facilities and Modernization of the Committee on Post Office and Civil Service, House of Representatives.
Contributors: United States. Congress. House. Committee on Post Office and Civil Service. Subcommittee on Postal Operations.; United States. Congress. House. Committee on Post Office and Civil Service. Subcommittee on Postal Facilities and Modernization.
Published: 1965
Place of publication: [Washington?]
Language: eng
Subjects: Postal rates -- United States.
Notes: At head of title: Committee print.