1. Geologic map of the Jeff Davis Peak quadrangle and the eastern part of the Everson Creek quadrangle, Beaverhead County, southwest Montana [cartographic material] Yale Public content 1997. 2002-06-01T04:00:00Z. 2016-07-26T21:18:50Z. Geological Survey (U.S.). The Survey ; For sale by U.S. Geological Survey Information Services. English. cartographic image. Public. Montana, Beaverhead County, U.S., and Beaverhead County.