Caterpillar nos. 6, 7, 8/9, 10, 11, 14, 15/16, 17, and 20, 1969 - 1973

Caterpillar nos. 6, 7, 8/9, 10, 11, 14, 15/16, 17, and 20, 1969 - 1973, Box: 97, Folder: 10-18. Kenneth Irby collection, MS 354. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/566295 Accessed July 22, 2026.