Migratory labor, hearings before subcommittee on migratory labor, 86th Congress, 1st session, on S. 1085, S. 1778, S. 2141, and S. 2498. pt. 1. Washington, D.C., Lansing. Mich., Madison. Wis., St. Paul, Minn., Trenton, N.J., New York City, N.Y., and Philadelphia. Pa., Aug. 7-Dec. 8, 1959.