The papers of Edward J. Breen consist of five boxes (2.5 linear feet) of manuscripts dating from 1936 to 1973. Arranged chronologically within an alphabetical sequence, these papers relate primarily to Breen's political career. Subject files, Senate bills, correspondence, clippings, and speech material make up the bulk of the collection. There are thirty-seven folders of Senate bills, some with drafts and correspondence. The correspondence files include letters from Guy M. Gillette, Clyde L. Herring, and Nelson G. Kraschel. There are also two folders concerning Fred Gilchrist. Subject files range in topics from the Townsend National Recovery Plan to the Mutual Affiliates Advisory Committee to the Democratic Party.