K.U. Observatory - equipment descriptions, equipment manuals, correspondence, and test information prior to 1972 (2 blueprints removed to oversize box), Box: 2, Folder: 23. Personal papers of Stephen J. Shawl, PP 484. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/128063 Accessed November 21, 2024.