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All Collections



About the collections



The California Geological Survey Digital Archive is a portal to historic images, texts, and maps detailing the mining and geologic history of California and the west. The collections found here document over 150 years of service in California from the Gold Rush to the Loma Prieta Earthquake. New collections and items will be continually added to the site, so please check back periodically for updates.

For more information about the collections please contact the California Geological Survey Library at cgslibrary@conservation.ca.gov or (916) 327-1850.

Copyright and permissions

Copyright by the California Department of Conservation California Geological Survey.  All rights reserved.  No part of the images found on this website may be reproduced without written consent of the California Geological Survey.

 

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