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8. OpenDataPhilly

Collections collections
OpenDataPhilly is a catalog of open data in the Philadelphia region. In addition to being the official open data repository for the City, it includ...

10. Penn State Rare Maps

Collections collections Pennsylvania State University pennsylvania-state-university
1490. The Donald W. Hamer Center for Maps and Geospatial Information digital map drawer contains the subset of our physical map collection that has been ...
1867. Sanborn Map Company. Digital Sanborn® Maps (1867-1970) delivers detailed property and land-use records that depict the grid of everyday life in more than 12,000 U.S. to... ProQuest Information and Learning.

12. Sanborn Maps: Pennsylvania, 1884-1938

Collections collections Pennsylvania State University pennsylvania-state-university
1884. The Sanborn Map Company, the best known of the U.S. fire-insurance map producers, has made maps since 1867. The fire insurance maps produced by San...