Author: Schweinfurth, Stanley P. - Yale University Library GeoBlacklight Search Results

1. Geologic map of the Avella quadrangle and part of the Steubenville east quadrangle, Washington County, Pennsylvania [cartographic material]

1976. 2013-08-26T20:16:30Z. 2013-09-04T19:51:57Z. Schweinfurth, Stanley P. U.S. Geological Survey. English. Public. Pennsylvania and Washington County.

2. Geologic map of the California quadrangle, Washington and Fayette Counties, Pennsylvania [cartographic material]

1967. 2012-01-20T18:53:49Z. 2012-03-05T17:35:01Z. Schweinfurth, Stanley P. U.S. Geological Survey. English. Public. Pennsylvania, Fayette County, and Washington County.

3. Geologic map of the west Middletown quadrangle, and part of the Bethany quadrangle, Washington County, Pennsylvania [cartographic material]

1975. 2013-06-14T20:30:56Z. 2013-06-26T19:51:28Z. Schweinfurth, Stanley P. U.S. Geological Survey. English. Public. Pennsylvania and Washington County.