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1943 Map of Morgan Valley
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1943 Map of Morgan Valley

USGS Topo · Published 1943

About this map

The northern California interior comes into focus during the early 1940s, highlighting a remote landscape where several counties—Lake, Colusa, Napa, and Yolo—converge. The settlement of Knoxville serves as a lonely outpost in a region dominated by the mining industry and large-scale ranching. This survey documents a cluster of significant mineral operations, including the Reid Mine, Harrison Mine, and the Manhattan Mine, which operated in the steep terrain of Morgan Valley. These mines suggest a period of active resource extraction before the modern shift toward conservation and viticulture.

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Map Details

Date Portrayed1943
Date Published1943
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:62,500
Physical Dimensions16.7 x 20.8 inches

Editions of this 1943 Morgan Valley Map

This is the sole edition of this map. No revisions or reprints were ever made.

Historical Maps of Knoxville Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain