1974. 2013-04-30T18:17:54Z. 2013-05-08T12:07:04Z. Tweto, Ogden, 1912-1983. U.S. Geological Survey. English. Public. Colorado, Eagle County, Lake County, Pitkin County, and Summit County.
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2. Geologic map of the Ruedi quadrangle, Pitkin and Eagle Counties, Colorado [cartographic material]
1972. 2012-03-26T14:01:39Z. 2012-05-03T15:31:54Z. Freeman, Val L., 1926-. U.S. Geological Survey. English. Public. Colorado, Pitkin County, and Eagle County.
