Philadelphia (Pa.) -- Maps
Historical Maps of Philadelphia.
From the Department of Geography at the University of Alabama.
Greater Philadelphia GeoHistory Network
"View mosaics of selected historic maps, mixed with current maps and aerial photographs from Google in an interactive viewer."
Digital Sanborn maps 1867-1970
Digital Sanborn Maps, 1867-1970 provides digital access to large-scale maps of American towns and cities. Sanborn maps contain data that can be used to estimate the potential risk for urban structures. This includes information such as the outline of each building, the size, shape and construction materials, heights, and function of structures, location of windows and doors.
Philadelphia City Maps Home
Aerial Photos, Zoning Maps, Photo Archives, Parcel Explorer by the Philadelphia City Government
Philadelphia - Maps and Geographical Information.
A wide-ranging list of Philadelphia maps from the library at the University of Pennsylvania.
Philadelphia City Planning Commission (PCPC) Map Gallery
Provides access to a number of census and district maps, and the 120-page document, The Political and Community Services Boundaries of Philadelphia.