"History and theory: Studies in the philosophy of history: Index to volumes I-V," Wesleyan University Press

"History and theory: Studies in the philosophy of history: Index to volumes I-V," Wesleyan University Press, Box: 6, Folder: 52. 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/315177 Accessed December 24, 2025.