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Trip
Bale Grist Mill State Historic Park
Bale Grist Mill State Historic Park is a California state park located in Napa County between St. Helena and Calistoga. The park is the site of a water-powered grist mill that was built in 1846 is one of only two water-driven mills remaining west of the Mississippi River.
The mill was established in 1846 by Dr. Edward Turner Bale on property in Rancho Carne Humana land grant. Bale lived near the site until his death in 1849.

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