Pressure box in Treadwell ditch. Douglas Island, Juneau district, Southeastern Alaska region, Alaska. 1904.
Dates
Date Taken
1904
Summary
Pressure box in Treadwell ditch. Douglas Island, Juneau district, Southeastern Alaska region, Alaska. 1904. Plate 17-A in U.S. Geological Survey. Bulletin 263. 1905.
Summary
Pressure box in Treadwell ditch. Douglas Island, Juneau district, Southeastern Alaska region, Alaska. 1904. Plate 17-A in U.S. Geological Survey. Bulletin 263. 1905.
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