Geological Antiquity of Man in America From C.S.M. alumni Mag. Vol. 19 #3, March 1929, Box: 3, Folder: 14. J. Harlan Johnson papers, RH MS 735. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/52770 Accessed May 18, 2024.