Books--Tallgrass Prairie: The Inland Sea 1st ed. (Kansas City, Mo.: Lowell Press, c1978) 1979 printing, Box: 5, item: 13-14. Patricia DuBose Duncan papers, RH MS 535. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/275881 Accessed November 23, 2024.