Proposals to extend coverage of minimum wage protection, hearings before subcommittee on labor, 85th Congress, 1st session, on S. 1135, S. 1159, S. 1160, S. 1178, S. 1267, S. 1273, S. 1418, S. 1503, S. 1505, and S. 1512, bills to amend Fair labor standards act of 1938, as amended, Feb. 25-Mar. 25, 1957.