B-13 Geology and Ore Deposits of the Platoro-Summitville Mining District B-13 Geology and Ore Deposits of the Platoro-Summitville Mining District
B-04 Geology and Ore Deposits of the Monarch District and Tomichi Districts B-04 Geology and Ore Deposits of the Monarch District and Tomichi Districts, Colorado
B-03 Geology and Ore Deposits of the Alma District B-03 Geology and Ore Deposits of the Alma District, Park County, Colorado