Correspondence. Date: October 31, 1956; From: Kenneth Colegrove; To: John L. McClellan; 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. This is Colegrove's second request (see "Northwestern University," Date: October 17, 1956).