This map reproduction shows a bird’s-eye-view of the Marshall coal mines near Boulder, Colorado. It also includes a diagram to illustrate the structure of the Louisville Basin and a geological section down South Boulder Creek.
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Additional information
| Weight | 0.25 lbs |
|---|---|
| Dimensions | 13.25 × 36 × 0.002 in |
Map Maker: American Bank Note Co., New York
