Anonymous Use of Automatic Telephone Devices : hearings before the United States Senate Committee on Commerce, Subcommittee on Communications, Eighty-Ninth Congress, first session, on Nov. 18, 19, 1965.

Committee Serial No. 89-43. Considers S. 2693 and S. 2713, to amend the Communications Act of 1934 to make unlawful the transmission of recorded telephone messages that do not identify the subscriber through whose telephone the message is transmitted.