'Morrison's Theory of Teaching'; 'Some Observations on the Implications of Morrison's Theory of Teaching; 'A Study of the Problems of Secondary School Teaching, with Reference to the Theory and Plan of H.C. Morrison', Box: 7, Folder: 7. Personal papers of Ernest Bayles, PP 220. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/273940 Accessed May 05, 2024.