Popular Collections

Open GeoData@Wisconsin

GeoData@Wisconsin
Download geospatial data layers, aerial imagery, and scanned maps for Wisconsin.

Open BTAA Geoportal


Big Ten Geoportal
Download geospatial data layers, aerial imagery, and scanned maps from Big Ten institutions (including UW-Madison)

Open RML aerial photography page


Historic Aerial Photography
The library is home to the largest collection of historic aerial photographs of Wisconsin, with over 260,000 images in the archive.