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California History Made Digital

Since April 1860, after the Legislature established the Geological Survey of California, geologists and engineers have been documenting, through photographs, illustrations and the written word, the geologic and mineral history of California.  in 150 years of service to the State the Survey has been witness to, and recorders of our ever-changing physical landscape - how its understood, related to and exlpoited.  Although subject to many name changes the employees of the Survey have always dedicated themselves to the fulfillment of its mission to provide scientific products and services about the geology, seismology, and mineral resources affecting the health, safety, and business interests of the people of California. 

The California Geological Survey Digital Archive is one of those products. As a portal to historic images, texts, and maps detailing the mining and geologic history of California and the west, the collections found here bring to life the heritage of our 150 year legacy. From the discovery of gold to the Loma Prieta Earthquake, this site is not only a history of CGS, it is a history of California itself.

High resolution TIFF files of most maps and photographs are available for purchase. For more information about this or about the collections themselves, 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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