
The Russian River corridor defines the valley floor of Mendocino County during the mid-1940s, serving as the primary artery for the Northwestern Pacific railroad and regional settlement. The city of Ukiah appears as the centralized urban hub, flanked by agricultural lands and numerous tribal lands including Coyote Valley Rancheria, Pinoleville Rancheria, and Guidiville Rancheria. This survey highlights a landscape of ranching and specialized institutions, notably the large campus of the State Hospital at Talmadge.
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1920 · Ukiah
USGS Topo · 1:62,500
1921 · Kelseyville
USGS Topo · 1:62,500
1922 · Willits
USGS Topo · 1:62,500
1922 · Hullville
USGS Topo · 1:62,500
1938 · Lakeport
USGS Topo · 1:62,500
1938 · Hopland
USGS Topo · 1:62,500
1942 · Willits
USGS Topo · 1:62,500
1943 · Pomo
USGS Topo · 1:62,500
1943 · Boonville
USGS Topo · 1:62,500
1943 · Kelseyville
USGS Topo · 1:62,500