National Geologic Map Database
General Information
- Title: A reconnaissance in northern Alaska across the Rocky Mountains, along Koyukuk, John, Anaktuvuk, and Colville Rivers, and the Arctic coast to Cape Lisburne, in 1901, with notes
- Author(s): Schrader, F.C., and Peters, W.J.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Professional Paper 20
- Publication Date: 1904
- Map Scale: 1:1,250,000
- Cross Section: Yes
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