Guide to Research CollectionsColorado Historical Society
Papers: .5 foot. Includes congressional correspondence, photographs, motion picture film, and memorabilia. Finding aid.
Oral History: 1974. 23 pages. Written permission required to cite or quote.
Denver Public Library
Western History Department
Oral History: 1979. 21 pages. Also photographs.
Library of Congress
Oral History: 1979. 21 pages.
University of Colorado Libraries
Papers: 1935-1972. 544 boxes. Personal political files (1935-1954); senatorial files (1955-1972) including subject files, committee files, bill files, correspondence, political files, statements, voting record, press files, audio tapes, Interparliamentary Union files, and United Nations files; and photographs. Finding aid. Written permission of family required.
Additional Papers: Correspondence in Frederick M. Betz, Sr. papers, 1920-1964. Finding aid.
Research Libraries Information Network In addition to the institutions listed above, items are also cataloged in collections at: University of Iowa Libraries, Iowa City, IA.