The map collection of about 500,000 sheets is principally medium and large-scale topographic sheets of physical science data. A collection of more than 5,000 atlases and reference books rounds out the map collection. While the book collection is completely cataloged, only 60% of the map collection is cataloged. To search the maps and books holdings, use the Library Catalog. If you don't find the items you're looking for, send an email with your request to the MIL reference staff at milrefdesk [at] library [dot] ucsb [dot] edu.
Resources for identifying maps for certain parts of our collection are linked below.
An outline of the call number system used in MIL. We also have a guide for reading map call numbers.
Information about the California topographic maps held in our collection as well as other sources for these maps can be found here. All scales and most editions of USGS topographic maps are available online via Topoview (National Geologic Map Database), the USGS Map Locator & Downloader, and the USGS Historical Topographic Map Explorer (in partnership with Esri).
Scanned indexes to the many medium- and large-scale international topographic maps we collect are available at the above link. We also have a pdf list of foreign topographic maps in our collection.
A list of maps held in our collection focusing primarily the Goleta and Santa Barbara areas.