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1958 Map of Morgan Valley, 1966 Print
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1958 Map of Morgan Valley

USGS Topo · Published 1966

About this map

Knoxville and its surrounding mineral wealth define this 1958 survey of the California Coast Ranges, where the mining industry left a permanent mark on the landscape. The map details a concentrated cluster of mercury and cinnabar operations, including the Manhattan Mine, Red Elephant Mine, Royal Mine, and Harrison Mine. These workings are situated near the intersection of Lake, Napa, and Yolo counties, a region where the Cache Creek canyon cuts through the Blue Ridge and Swanson Range.

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Map Details

Date Portrayed1958
Date Published1966
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:62,500
Physical Dimensions16.6 x 20.8 inches

Editions of this 1958 Morgan Valley Map

Historical Maps of Knoxville Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain