GIS: Other Suggested Resources
National Atlas.gov
Gateway to several options ranging from printable pre-formatted maps on a variety of topics to the Map Maker program. Map Maker allows you to create custom maps at the city/town, county, or state level using select social, economic and geographic data avalable from federal government sources.
National Map
Interactive, online mapping service from the U.S. Geological Survey. Create customized topographic maps reflecting elevation, geology, land use, natural hazards, and other features.
PA Spatial Data Access
PA's official public access clearinghouse for geospatial data. Includes access to aerial photographs (DOQQs), soils data, and more. Try the easy to use "Pennsylvania Imagery Navigator" for quick access to imagery and raster data including topographic maps.
Sanborn Fire Insurance Maps, 1867-1970 - Pennsylvania
Maps of towns or cities in Pennsylvania originally created for use by fire insurance companies. Maps are drawn to a scale of 50 feet to an inch, list street blocks and building numbers, and are coded for building materials used. Digitized color versions of some of the Pennsylvania maps are available from Penn State's map library.