"Views of the New Ditch" a major engineering feat which supplied water to the county, poster by F. Holtzmann of Columbia, Tuolumne Co. in Columbia Museum at Columbia State Historic Park. Columbia, CA.

"Views of the New Ditch" a major engineering feat which supplied water to the county, poster by F. Holtzmann of Columbia, Tuolumne Co. in Columbia Museum at Columbia State Historic Park. Columbia, CA.
Photo by Jim Steinhart © 2016, all rights reserved. (Ref: CAGG4076)

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Columbia State Historic Park, CA

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