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Filters: Tags: {"scheme":""} (X) > partyWithName: U.S. Geological Survey (X) > partyWithName: Purrington, Chester Wells (X)

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Mount St. Augustine, Cook Inlet, a typical ash cone. Alaska. 1896, plate 10 in U.S. Geological Survey. Professional paper 45. 1906.
Valley of the Dolores above Rico, looking south. La Plata Mountains in the distance. The landslide at burns in the center. Rico Quadrangle. Dolores County, Colorado. 1896.
View from the Bullion Tunnel, looking south across the head of the San Miguel Valley. Shows the Unconformity between the San Miguel and underlying formations. Telluride Quadrangle. Dolores County, Colorado. 1896.