Data Summary




Historic topographic maps for Pennsylvania, Version 2 (Albers)

2006 - U S Geological Survey


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API
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ADDITIONAL RESOURCES
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ABSTRACT
A newly revised version of the historic USGS 15 minute topographic maps for Pennsylvania as collected from the MapTech Historical Map Collection at 'http://historical.maptech.com'. As an improvement to the initial version, the original scanned images from MapTech were downloaded, assembled with mosaicing software, and georeferenced to the statewide Albers NAD83 projection.