1. Geologic map of the Four J Rim quadrangle, Sweetwater County, Wyoming and Moffat County, Colorado [cartographic material] Yale Public content 1972. 2012-03-26T13:49:19Z. 2012-05-03T15:31:54Z. Roehler, Henry W. The Survey. English. Public. Wyoming, Sweetwater County, Colorado, and Moffat County.