books.google.comhttp://books.google.com/books/about/Postal_Service_Automation_Program.html?id=xdKOvyVMCncC&utm_source=gb-gplus-sharePostal Service Automation Program
Hearings Before the Subcommittee on Postal Operations and Services of the Committee on Post Office and Civil Service, House of Representatives, Ninety-ninth Congress, First and Second Sessions, November 7, 1985, April 29, 1986
Postal Service Automation Program: Hearings Before the Subcommittee on Postal Operations and Services of the Committee on Post Office and Civil Service, House of Representatives, Ninety-ninth Congress, First and Second Sessions, November 7, 1985, April 29, 1986