Verdu, Alfonso; The "Five Ranks" Dialedic, Monumenta...culture, no date

Verdu, Alfonso; The "Five Ranks" Dialedic, Monumenta...culture, no date, Box: 12, Folder: 42. Personal papers of Richard T. De George, PP 531. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/315332 Accessed November 14, 2025.