Including All Children, H.R. Turnbull and A. Turnbull in Children Today, Volume 20, Number 2, 1991, Box: 1, Folder: 34. Personal papers of Rud Turnbull, PP 511. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/304787 Accessed June 21, 2025.