Orange County aerial photo atlases are located in the Map and Atlas section of the 1st floor of the Langson Library. The atlases can be searched in ANTPAC with the following subject: Orange County Calif. - Aerial Photographs.
Topographic maps are located in the Map and Atlas section on the 1st floor of the Langson Library. They are filed by title in the atlas cases.
The Cal-Atlas site facilitates the coordinated and sustainable development, maintenance, licensing and sharing of geospatial data and web map services by California government agencies, partners and stakeholders including California Spatial Information Library (CaSIL).