1. Geologic map of Precambrian rocks along part of the Hartville Uplift, Guernsey and Casebier Hill quadrangles, Platte and Goshen counties, Wyoming Yale Public content 1997. 2002-06-01T04:00:00Z. 2020-10-16T18:48:59Z. Geological Survey (U.S.). The Survey ; For sale by U.S. Geological Survey Information Services. English. Public. Wyoming, Platte County, and Goshen County. Precambrian.