Hearings Before a Subcommittee of the Committee on Post Office and Civil Service, United States Senate, Eighty-first Congress, First Session, on S.558, S. 559, S. 1762 ... and Other Bills, to Adjust Salaries of Postal Employees and Employees Under the Classification Act of 1923, as Amended, and Other Employees. May 9,11,13,18,20, and 25, 1949