East Contra Costa County Historical Mususem
3890 Sellers Ave
Brentwood, CA 94513
The purpose of the East Contra Costa Historical Society (ECCHS) includes conserving the history of the communities in the Far East Contra Costa County and educating residents and students in our history. The communities include Brentwood, Oakley, Knightsen, Byron, Discovery Bay and Bethel Island.
Also at this address
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