Popular Collections

View and download publicly available state and local geospatial data layers, aerial imagery and scanned maps for Wisconsin.

BTAA Geoportal

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

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