Ekren, E. B., and Geological Survey. <i>Stratigraphic and Structural Relations of the Hoodoo Quartzite and Yellowjacket Formation of Middle Proterozoic Age from Hoodoo Creek Eastward to Mount Taylor, Central Idaho ; with a Geologic Map of the Region between the Middle Fork of the Salmon River and the Salmon River</i>. Reston, Va.: Department of the Interior, U.S. Geological Survey, 1988.