Senatorial campaign expenditures, 1930 : hearings before a Select committee on senatorial campaign expenditures, United States Senate, Seventy-second Congress, pursuant to S. Res. 215 (Seventy-first Congress), a resolution authorizing the appointment of a special committee to make investigation into the campaign expenditures of candidates for the United States Senate. Part 1. Testimony on remedial legislation, May 4, 5, and 7, 1931.