Papers concerning the Tall Grass Prairie National Park, 1974-1975: correspondence (Hays granddaughter Maureen and University of Kansas Professor E. Raymond Hall), typescript by Hall, clippings and leaflets, Box: 10, Folder: 19. Russell Randolph Hays papers, RH MS 564. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/278278 Accessed May 05, 2024.