MS-02 Hydrogeology of St. Charles Mesa MS-02 Hydrogeology of St. Charles Mesa, Pueblo County, Colorado
B-20 Preliminary Notes on the Revision of the Geological Map of Eastern Colorado B-20 Preliminary Notes on the Revision of the Geological Map of Eastern Colorado
B-12 Common Minerals and Rocks: Their Occurrence and Uses B-12 Common Minerals and Rocks: Their Occurrence and Uses (1917)