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Outdoor view showing some type of occupational mining operation located in the small mining area of Cascade Colorado.  Showing the type style of wooden operation structures on the mountain side used in mining operations.
 (this was obtained from a large colorado advance collection) backside in fountain pen ink Colorado with a three letter id cas to indicate Cascade. 
 
Date: c1880
Original
Measurements: 5 x 8 inch
Condition: Sold as used item, edge and surface wear, top right edge has small edge tear, no crease