Correspondence. Date: May 31, 1957; From: Thomas H. Bienz; To: James O. Eastland; Contents: Requests a copy of Senate Document 148, "Congressional Investigations of Communism and Subversive Activities: Summary-Index, 1918 to 1956," which was compiled by the Government Operations Committee. Also asks for a copy of Eastland's own index of names of persons, organizations, and publications, etc., that have appeared in testimony since 1951.