1. Subversive infiltration in telegraph industry, supplemental hearing before subcommittee to investigate administration of Internal security act and other internal security laws, 82d Congress, 2d session, Jan. 22, 1952. Bookmark Corporate/Agency Authors: Judiciary Committee, Senate and Congress Publisher: Judiciary Committee, Senate Date: [1952.] SuDoc number: Y 4.J 80/2:Su 1/3/supp.