The UC San Diego Library Map Collection is located on the 2nd/Main Floor of the Geisel Library Building and houses maps, atlases, and related research materials. The core collection of topographic maps worldwide is supplemented by topical maps, aerial photos, gazetteers, atlases, and other mapping-related materials. There is particular emphasis on the San Diego region and Southern California.
The holdings are complemented by the rare map holdings in the Mandeville Special Collections, particularly maps of the San Diego region and Baja California, as well as the historical nautical charts collection.
In addition to UC San Diego's holdings, qualified researchers can use this as a gateway to the major cartographic and spatial data resources of other UC map libraries and of map materials on the World Wide Web.