1. Geologic map of the Sagebrush Park quadrangle, Fremont and Sweetwater Counties, Wyoming [cartographic material] Yale Public content 1979. 2012-06-21T18:54:09Z. 2012-06-29T20:46:44Z. Schmitt, Leonard J. U.S. Geological Survey. English. Public. Wyoming, Fremont County, and Sweetwater County.