Pittsburg, since 1839

Pittsburg (formerly Black Diamond, New York Landing and New York of the Pacific) is a city in Contra Costa County, California, United States. We’re gathering its old postcards, photos and papers from public archives right now.

Photo: Thomas Savage

187 years of Pittsburg

Every find lands on the timeline as it comes in. Gaps show where the archives go quiet, and where neighbors can help.

1839established

76,416people today

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