Zip Code System in the U.S. Postal Service. hearings before the United States House Committee on Post Office and Civil Service, Subcommittee on Postal Facilities and Modernization, Eighty-Ninth Congress, first session, on Mar. 24, Apr. 8, 27, 28, May 11, 18, 19, 21, June 2, 8, 9, 1965. <Part 1> :
Considers H.R. 5180 and related bills, to encourage use of Zip code by volume mailers through postage rate discounts. Also examines pre-sort and addressing requirements for bulk rate mailers, and estimated reduction in delivery costs to Post Office.