San Francisco California USA Gelatin Photograph 1906 Earthquake #3 Blumberg Phot
SAN FRANCISCO CALIFORNIA USA GELATIN PHOTOGRAPH 1906 EARTHQUAKE #3 BLUMBERG PHOTO. With an estimated moment magnitude of 7.9 and a maximum Mercalli intensity of XI (Extreme), it created high-intensity shaking from Eureka on the North Coast to the Salinas Valley, …..
