Indexes the literature of geology, including journals, books, conference proceedings, maps, and USGS reports.
Major Research Tools
Tool for locating, downloading and visualizing census data and other demographic information from current and historic sources. Includes the entire US Census from 1790 to 2000, all annual updates from the American Community Survey, and the Religious Congregations and Membership Study from 1980 to 2000.
Other Suggested Research Tools
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, the Decennial Census of Population and Housing, and the Economic Census.
"Presents in maps and text complete data about the creation and all subsequent changes (dated to the day) in the size, shape, and location of every county in the fifty United States and the District of Columbia." Available as interactive maps and shapefiles that can be downloaded for use with GIS software.
Create and save maps illustrating over 60 socioeconomic indicators on people, jobs, agriculture and other county data. Sources include the American Community Survey, economic reports from the Bureau of Labor Statistics and the latest Census of Agriculture. You may also download your data into a spreadsheet for use in Excel or other statistical software.
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.
Create and save maps illustrating 168 indicators on the food environment covering food choices, health and well-being, and community characteristics in U.S. states or counties. Indicators include store/restaurant proximity, food prices, and food and nutrition assistance programs. Data is drawn from numerous sources including the Decennial Census, County Business Patterns, and Behavioral Risk Factor Surveillance System.
Launched by the Federal Geographic Data Committee, the Geospatial Platform provides access to federally maintained and trusted geospatial data, services, and applications for sharing and use.
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. Digitized color versions of some of the Pennsylvania maps are available from Penn State's map library.