In From Heaven to the Prairie: when you know, you know; the story of the 972nd living ECK master, (IWP Publishing), 1980, Box: 9, Folder: 6. Patricia DuBose Duncan papers, RH MS 535. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/275930 Accessed November 23, 2024.