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History · Port Costa
The history of Port Costa
Port Costa is a small town and census-designated place (CDP) in Contra Costa County, California, United States, located in the East Bay region of the San Francisco Bay Area. We’re gathering its old postcards, photos and papers from public archives right now.
Port Costa through the years
Every find lands on the timeline as it comes in. Gaps show where the archives go quiet, and where neighbors can help.
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