District of Columbia. National representation and suffrage for residents of District of Columbia, hearings, 76th Congress, 3d session, on H. J. Res. 232, proposing amendment to Constitution of United States providing for national representation for the people of District of Columbia, and H. J. Res. 564, proposing amendment to Constitution of United States to provide for republican form of government and representation in Congress for District of Columbia, May 18-20, 1938.