Texas State Newsletter. Houston, Texas: National Campers and Hikers Association, 1968

Texas State Newsletter. Houston, Texas: National Campers and Hikers Association, 1968, Volume: Gilbert D1251. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/527725 Accessed December 27, 2025.