David R ButlerDAVID R. BUTLER retired in 2019 as the Texas State University System Regents' professor of geography, and a university distinguished professor, at Texas State University in San Marcos, Texas. He was a geography professor for thirty-seven years, the lst twenty-two of those at Texas State University. He was a red bus Gearjammer in Glacier Park during his college days in the summers of 1973 and 1974 and has conducted research there since 1975. He has written two books on Glacier National Park, including Fire Lookouts of Glacier National Park in Arcadia Publishing's Images of America series. Read More Read Less