1. Coal resource occurrence map of the Arvada NE quadrangle, Sheridan and Campbell Counties, Wyoming
1980. 2002-06-01T04:00:00Z. 2022-11-16T20:34:32Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. Wyoming, Sheridan County, Campbell County, Sheridan County (Wyo.), and Campbell County (Wyo.).
