1. Geologic map of the Goat Mountain quadrangle, Lemhi County, Idaho, and Beaverhead County, Montana [cartographic material] Yale Public content 1973. 2012-04-10T15:36:18Z. 2012-04-16T15:51:14Z. Geological Survey (U.S.). U.S. Geolgocial Survey. English. Public. Idaho, Lemhi County, Montana, and Beaverhead County.