Privacy, collection, use, and computerization of personal data, joint hearings, pt. 1, before Ad Hoc Subcommittee on Privacy and Information Systems of Committee on Government Operations and Subcommittee on Constitutional Rights of Committee on Judiciary, Senate, 93d Congress, 2d session, on S.3418, S.3633, S.3116, S.2810, S.2542, June 18-20, 1974.