Lafayette College Library

Indexes the literature of geology, including journals, books, conference proceedings, maps, and USGS reports.

From the US Census Bureau, this site offers current data on people, housing, business and government in tabular form (importable to GIS or statistical software) or as ready-made thematic maps. Sources include the American Community Survey, Census 2000 and the Economic Census.

A center within Columbia University's Earth Institute, CIESIN provides an extensive gateway to data and other information focusing on human interactions in the environment.  Provides a topic search as well as subject access to spatial and tabular data sets held by CIESIN or hosted on its web site. 

Resources for integrating GIS into the social sciences. Includes materials on methods, tools, techniques, software, data access, and more.

From the EPA, map various types of environmental information, including air releases, drinking water, toxic releases, hazardous wastes, water discharge permits and Superfund sites. See also TOXMAP, from the National Library of Medicine.

GIS portal or "One-stop" designed to facilitate communication and sharing of geographic data and other resources. Search for federal, state, and local data or maps, and more.

Contains data from the 1790-1960 US Housing and Population censuses. Browse by state or county by topic, produce tables, and/or create ratios. Also includes "Map it" feature which generates interactive maps at the national, state or county levels.

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.

Interactive, online mapping service from the U.S. Geological Survey. Create customized topographic maps reflecting elevation, geology, land use, natural hazards, and other features.

From GeoLytics, the NCDB offers normalized Census Tract data from 1970 - 2000 for all urban areas of the country. One can generate custom reports and maps within the NCDB. Files are easily imported into GIS software or other statistical packages for analysis. Note: At present, this resource may only be accessed using Internet Explorer.

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.

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.

Based at Queens College of the City University of New York, this visual analysis tool allows you to study the demography of the U.S. through the use of interactive maps and data reports. Select data are available from 1790 to present. Note: unless specifically indicated, data are not normalized. For normalized Census data for urban areas 1970 to present, see the Neighborhood Change Database.