Notes on basic factors in Russian history, Russian concerns with origins, Kievan Rus, Byzantium, Steppe Empires, Novgorod, Box: 1, Folder: 42. Personal papers of John T. Alexander, PP 46. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/221359 Accessed November 23, 2024.