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The Refugio Valley
Rocks, Soils, Hills and Valleys
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The Hercules Powder Works
Explosives and the Second Industrial Revolution
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Factory Town
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Neatline
Neatline Time
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“Historic US 40 Route” Sign Project
Seeking Information on Ceramic Acid Vessels
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Municipal
Herculean Newsletter 1977-1979
Newsletter published by the City of Hercules.
European People
European Settlement
First Contact & Spain
Mexico
Californios
Americans
Gold Rush
Settlement of Pinole
Civil War Period
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Establishment and Early Operation
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