Author: Colton, George Willis, 1920- / Language: English - Yale University Library GeoBlacklight Search Results

Start Over Author Colton, George Willis, 1920- Language English

1. Geologic map of the Hamburg quadrangle, New York bedrock geology. [cartographic material]

1956. 2011-04-20T17:07:00Z. 2012-02-14T23:29:24Z. Colton, George Willis, 1920-. U.S. Geological Survey. English. Public. New York (State) and Erie County.

2. Surface structure map of parts of Lycoming, Clinton, Tioga, and Potter Counties, Pennsylvania [cartographic material]

1967. 2018-04-17T20:17:40Z. 2018-09-05T19:36:20Z. Colton, George Willis, 1920-. Commonwealth of Pa., Dept. of Internal Affairs, Topographic and Geologic Survey. English. cartographic image. Public. Pennsylvania and Pine Creek Valley (Potter County-Lycoming County).