Select Data
Whether you want to obtain a specific data resource or you would like to explore what is available, the NHGIS Data Finder is the place to start, accessible through any of the site's Select Data links.
Download/Revise Extracts
After you have completed a data request through the Data Finder, you may visit the Extracts History page at any time through the Download/Revise Extracts link. It provides a listing of all of the extracts you have made and allows you to download, revise or resubmit any previous data request.