Subject: Geology / Spatial Coverage: Pennsylvania. - Yale University Library GeoBlacklight Search Results

1. Geologic map index of Pennsylvania [cartographic material]

1981. 2018-05-10T19:26:42Z. 2018-09-05T19:19:07Z. McIntosh, Willard L. Dept. of the Interior, United States Geological Survey. English. cartographic image. Public. Pennsylvania and Pennsylvania.

2. Grand atlas. contains fifty six county maps on forty nine sheets / [cartographic material] : Division I, county geological maps, Part I

1885. 2012-03-14T13:16:48Z. 2013-03-18T21:59:53Z. Geological Survey of Pennsylvania. Second Geological Survey of Pennsylvania. English. Public. Pennsylvania and Pennsylvania.

3. The stratigraphic relationship of the Berea, Corry, and Cussewago sandstones in northeastern Ohio and northwestern Pennsylvania

1946. 2018-01-23T14:42:00Z. 2018-01-23T14:42:00Z. De Witt, Wallace, Jr., 1920-2012. U.S. Geological Survey. English. cartographic image. Public. Pennsylvania, Ohio, Ohio., and Pennsylvania. Mississippian and From 310 to 345 million years ago.

4. Topographical map of the state of Pennsylvania

1862. 2008-08-08T15:24:47Z. 2018-09-05T19:53:09Z. Walling, Henry Francis, 1825-1888, creator, surveyor. Smith, Palmer & Co. English. cartographic image. Public. Pennsylvania and Pennsylvania.