Author: Pennsylvania. Bureau of Topographic and Geologic Survey / Format: cartographic image - Yale University Library GeoBlacklight Search Results

Start Over Author Pennsylvania. Bureau of Topographic and Geologic Survey Format cartographic image

1. Map of the Mercer clay and adjacent units in Clearfield, Centre, and Clinton Counties, Pennsylvania [cartographic material]

1964. 2018-04-17T20:15:13Z. 2018-09-05T19:41:47Z. Pennsylvania. Bureau of Topographic and Geologic Survey. Pennsylvania Bureau of Topographic and Geologic Survey. English. cartographic image. Public. Pennsylvania, Clearfield County, Centre County, Clinton County, Centre County., Clearfield County., and Clinton County.

2. Topographic map of Lehigh County, Pennsylvania [cartographic material]

1973. 2018-05-24T18:04:22Z. 2018-09-05T19:35:35Z. Pennsylvania. Bureau of Topographic and Geologic Survey. [Pennsylvania Bureau of Topographic and Geologic Survey], Williams & Heintz Map Corp.). English. cartographic image. Public. Lehigh County (Pa.), Pennsylvania, and Lehigh County.