ZIP code system in the United States postal service :
hearings before the Subcommittee on Postal Facilities and Modernization of the Committee on Post Office and Civil Service, House of Representatives, Eighty-ninth Congress, first-second sessions, on H.R. 5180, [H.R. 9551], and similar bills -- bills to amend Title 39, United States Code, to encourage the use by volume mailers of Zip Code through postage rate concession, Mar. 24, 1965 - May 3, 4, 11, 19, 1966.

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Full view   pt.2 State University System of Florida