Juvenile delinquency: (youth employment); hearings before the Subcommittee to Investigate Juvenile Delinquency of the Committee on the Judiciary, United States Senate, 84. Congress, 1. session, pursuant to S. Res. 62, investigation of juvenile delinquency in the United States, April 20, May 11 and 12, 1955 (Greenwood Press, 1968)