The libraries subscribe to Social Explorer, an online demographic mapping application. It includes census data from 1790 to the present, and maps and data reports are easy to create and customize.

Stanford University initiative to support projects using geospatial technologies for historical research.

The Mapping History Project has been designed to provide interactive and animated representations of historical problems and/or illustrations of historical events, developments, and dynamics.

The Historical GIS Clearinghouse and Forum provides a central reference point for scholars seeking to access or catalogue projects that apply geographic technologies to historical research.

Extensive collection of US and World maps.