'Science Education: the Science Magazine for All Science Teachers' - vol. 15, no. 2, 1931; vol. 20, no. 1, 1936, Box: 6, Folder: 10. Personal papers of Ernest Bayles, PP 220. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/273931 Accessed April 29, 2024.