Wedel, Waldo R. Some early Euroamerican percepts of the Great Plains and their influence on anthropological thinking, Box: 1, item: 15. Unpublished papers from an Images of the Plains Conference, RH MS 139. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/47020 Accessed January 13, 2025.