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- U.S. Geological Survey6
- The Survey2
- Breckenridge Mining and Cyaniding Company1
- Geological Survey1
- Teal and Kedzie1
- The Survey ; For sale by Branch of Distribution1
- The Survey ; For sale by Map Distribution1
- U.S. Department of the Interior, Bureau of Land Management,For sale by U.S. Department of the Interior, Bureau of Land Management, Colorado State Office1
- U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : U.S. Geological Survey1
