Rubbings - done during Kellogg's visits abroad (primarily studies of historical letters from monuments - mostly dated 1921) [25 sheets], Folder: 20 (oversize). Personal papers of Joseph M. Kellogg, PP 237. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/137032 Accessed May 20, 2024.