Sauer, G[ordon] C. - "Zit" [Dr. Sauer is credited as the first person to use the word "zit" in print], Box: 103, Folder: 52. Sauer's Gouldiana Research about John Gould and other papers, MS 304. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/205523 Accessed January 25, 2025.