Investigation of air mail and ocean mail contracts. Part 7, February 26 to March 8, 1934 : hearings before a Special Committee on Investigation of Air Mail and Ocean Mail Contracts, United States Senate, Seventy-third Congress, second session pursuant to S. Res. 349 (72d Congress), a resolution creating a special committee of the Senate to investigate air mail and ocean mail contracts and S. Res. 143, a resolution enlarging the authority of the Special Committee to Investigate Air and Ocean Mail Contracts