Map of Philadelphia

First Friday: Mapadelphia

Join us for a map filled First Friday exploring our collection of atlases and historical maps!

Explore the Philadelphia Geohistory Network 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.