Geology of the Western Escarpment, Guadalupe Mountains, Texas -- Geologic guide for U.S. Highway 62 (180) from El Paso to Southern Guadalupe Mountains at the Junction of U.S. 62-180 with Texas 54 from Van Horn -- Geologic guide from National Park Road entrance to Williams Ranch / Lloyd C. Pray -- Trail guide for Day 1 : Shumard to Bone Canyon Traverse / C. Rossen, P.J. Lehmann, and J.F. Sarg.