Ferruginous hawk or buteo regalis nesting accounts, 1980-1987, 1990-1991, 1993-1994, 1996, 1998-2000, Box: 1, Folder: 14-23. Personal papers of Stan Roth, PP 622. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/444829 Accessed June 02, 2024.