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Walnut Creek Magazine

Contra Costa County Historical Society - Martinez, CA

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724 Escobar St.
Martinez, CA 94553

(925) 229-1042

www.cocohistory.com

Business Hours

Tuesday 9:00 am 4:00 pm
Wednesday 9:00 am 4:00 pm
Thursday 9:00 am 4:00 pm

Founded 1951

The mission of the Contra Costa County Historical Society is to preserve, protect, and provide public access to the records and heritage of Contra Costa County.