What's Here?
The purpose of the Greater Philadelphia GeoHistory Network is to gather geographic materials useful for the study of historic Philadelphia and its region.
This site contains thousands of old maps, property atlases, city directories, industrial site surveys, and other items documenting the history and development of the city from the 1600s through today.
Resource Browser
Browse through all of the resources available on the GeoHistory website, as well as related resources available on the web.
View high-resolution digital images of historic maps and documents.
Interactive Viewer
View mosaics of selected historic maps, mixed with current maps and aerial photographs from Google in an interactive viewer.
(Not all materials are available in this viewer. Please consult the resource browser for a full list.)