American prisoners of war and missing in action in Southeast Asia, February 28, 1971, Box: 1, Page: 6. 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/32488 Accessed November 15, 2024.