A summary of drilling activities in the Four Corners area, 1945-1954, in Cooper, J.C., ed., Geology of parts of Paradox, Black Mesa, and San Juan Basins, Four Corners Field Conference

Umbach, P.H., and Lewis, P.W., 1955, A summary of drilling activities in the Four Corners area, 1945-1954, in Cooper, J.C., ed., Geology of parts of Paradox, Black Mesa, and San Juan Basins, Four Corners Field Conference: Four Corners Geological Society Guidebook, p. 46-50.