Photographs & Engravings of Early Geological Field Trips
Geology Field Trip Photographs
Pre-1900 Early Geological Field Trip Photographs
1880-1881 – Engravings from the Second Annual Report of the United States Geological Survey for 1880-’81. J. W. Powell, Department of the Interior, United States Geological Survey, Washington, D. C.: Government Printing Office, 1882.
1881-1882 – Engravings from the Third Annual Report of the United States Geological Survey for 1881-’82. J. W. Powell, Department of the Interior, United States Geological Survey, Washington, D. C.: Government Printing Office, 1883. 1882.
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