Map Library
| Organization | Description | URL |
| Newberry Library | Atlas of Historical County Boundaries | http://publications.newberry.org/ahcbp/ |
| Library of Congress | Digital Catalog of Prints and Photographs | http://www.loc.gov/pictures/ |
| Kentucky Virtual Library | Digital Library - Kentuckiana | http://kdl.kyvl.org/ |
| University of Louisville | Digital Collections | http://digital.library.louisville.edu/ |
| USGS | Earth Explorer | http://earthexplorer.usgs.gov/ |
| US Department of Agriculture | Geospatial Data Gateway | http://datagateway.nrcs.usda.gov/ |
| Cartography Associates | Historical Maps database- David Rumsey Map Collection - 29,000 maps and images online focusing on the 18th & 19th century | http://www.davidrumsey.com/ |
| Kentucky Historical Society | Historical Marker Database Search | http://migration.kentucky.gov/kyhs/hmdb/MarkerSearch.aspx?mode=All |
| Federal Government | National Atlas | http://www.nationalatlas.gov/ |
| Minnesota Population Center | National Historical Geographic Information System provides aggregate census data and GIS-compatible boundary files 1790 through 2010. | https://www.nhgis.org/ |
| Census Bureau | TIGER files | http://www.census.gov/ |