The Surprise Valley landslide abd widening of Grand Canyon Author P.W.Huntoon Article Date Summer 1975 Journal Title Plateau
The role of caves un dating Grand Canyon Author A. L. Lange Article Date January 1955 Journal Title Plateau
High-angle gravity faulting in the eastern Grand Canyon Author P.W.Huntoon Article Date Winter 1973 Journal Title Plateau
Geomorphological implications of pre-Colorado and Colorado tributary drainage in the western Grand Canyon region Author R.A.Young Article Date Winter 1970 Journal Title Plateau