Amendments to the Policemen and Firemen's Retirement and Disability Act / Hearings before Subcommittee No. 3 of the Committee on the District of Columbia, House of Representatives, Eighty-sixth Congress, first session on H.R. 3735, H.R. 2749 [and] H.R. 2750, bills to make the Policemen and firemen's retirement and disability act amendments of 1957 applicable to retired former members of the Metropolitan Police Force, the Fire Department of the District of Columbia, the United States Park Police Force, the White House Police Force, and the United States Secret Service, and to their widows, widowers, and children. February 19 and March 9, 1959.