Oversize maps - Sweden, Japan, Asia (Mongol Empire), China, Vietnam, Cambodia, Laos, Thailand, Asia, Southeast Asia, Ontario, 1967 - 1996, Folder: 5. John and Frances Peterson collection, RH MS 1330. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/195025 Accessed June 01, 2024.