Wiretapping--the Attorney General's program--1962 : hearings before the Committee on the Judiciary, United States Senate, Eighty-seventh Congress, second session on S. 2813, a bill to prohibit wiretapping by persons other than duly authorized law enforcement officers engaged in the investigation or prevention of specified categories of criminal offenses, and for other purposes and S. 1495, a bill to prohibit wiretapping by persons other duly authorized law enforcement officers engaged in the investigation or prevention of specified categories of criminal offenses, and for other purposes, March 29, April 4, 5, 6, and May 10, 17, and 24, 1962.