Pier for trestle Hot Air ditch on Ophir Creek. Ophir district, Yukon region, Alaska. 1904.
Dates
Date Taken
1904
Summary
Pier for trestle Hot Air ditch on Ophir Creek. Ophir district, Yukon region, Alaska. September 1904. Plate 21-A in U.S. Geological Survey. Bulletin 263. 1905.
Summary
Pier for trestle Hot Air ditch on Ophir Creek. Ophir district, Yukon region, Alaska. September 1904. Plate 21-A in U.S. Geological Survey. Bulletin 263. 1905.
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