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Walnut Creek Magazine

Contra Costa County Historical Society - Martinez, CA


724 Escobar St.
Martinez, CA 94553

Business Hours

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

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.