Note: the oldest picture shown here was taken in 1909. Several of our COOP sites date back to the late 1800s. However no photos or records are available prior to 1906 because all records at the San Francisco office were destroyed in the 1906 earthquake.

Date: 1909	Date: 1913	Date: 1916
Location: unkn	Location: Point Reyes	Location: Deer Creek
	Marin County	Tehama County
Date: 1937	Date: 1940	Date: 1941
Location: unkn	Location: Grizzly Flats	Location: Paso Robles
	Eldorado County	San Luis Obispo County
Date: 1941	Date: 1941	Date: 1940
Location: Ben Lomond	Location: Ben Lomond	Location: West Branch
Santa Cruz County	Santa Cruz County	Butte County
Date: 1953	Date: 1952	Date: 1962
Location: Lockwood	Location: Santa Clara University	Location: Squaw Valley Lodge
Monterey County	Santa Clara County	Placer County