American Prisoners of War in Southeast Asia, 1971: Hearings before the Subcommittee on National Security Policy and Scientific Developments of the Committee on Foreign Affairs House of Representatives, Ninety-Second Congress, First Session, Part 2, June 29, August 3, September 28, 1971, Box: 3, Folder: 3. The Dr. David A. Otto, Special Envoy for the Missouri State Teachers Association during the time of the 1971 Paris Peace Talks, collection, RH MS 1257. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/32528 Accessed November 15, 2024.