Oversized maps - Ponca City (Oklahoma), Houston, Fayetteville (Arkansas), Arkansas, Colorado, Nebraska, Harlan County (Nebraska), 1975 - 1991, Folder: 25. John and Frances Peterson collection, RH MS 1330. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/195016 Accessed November 26, 2024.