Letters to foreign leaders, written in French, Box: 1, Page: 13-18. 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/32492 Accessed May 16, 2024.