1. Surficial geologic map of the Gillette 30ʹ x 60ʹ quadrangle, Campbell and Crook counties, Wyoming
1987. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Wyoming, Campbell County, and Crook County.