Geology of Lehigh and Northampton Counties, Pennsylvania: Historical Works
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Maps >> Topographic Map of Lehigh County
Mr.SID map (9.5 MB)
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Flash-based map (6.5 MB)
Includes zoom and click-and-drag features.
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DCNR Quadrangle Maps
Click on a portion of the map below for information from DCNR about corresponding geologic quadrangle maps, including digitized map coverage when provided.