"Indiana Citizens Committee for Research, Inc." (note at top states that ten copies were sent); From: H.J. Pierson; To: John McClellan; Contents: Requests ten copies of Senate Document 148, "Congressional Investigations of Communism and Subversive Activities: Summary-Index, 1918 to 1956," which was compiled by the Government Operations Committee., CRJO 2/10, Box: CRJO 2. Richard J. O'Melia Collection, RJO. University of Notre Dame Archives. https://archivesspace.library.nd.edu/repositories/2/archival_objects/1754707 Accessed November 22, 2024.