724 Escobar St.
Martinez, CA 94553
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.