Social security. Unemployment, old age, and social insurance, hearings before subcommittee, 74th Congress, 1st session on H. R. 2827, for establishment of unemployment, old age, and social insurance, H. R. 2859, for establishment of unemployment and social insurance, H. R. 185, for establishment of system of unemployment insurance, and H. R. 10, for establishment of unemployment and social insurance, Feb. 4-15, 1935.