The Russian River winds through the heart of this Sonoma County landscape, shaping the valley floor where Healdsburg and several historic settlements are situated. The 2018 survey reveals a distinct pattern of agricultural use and estate development, particularly around Jimtown and the area near Soda Rock. To the northeast, the terrain rises into the Mayacmas Mountains, where landmarks like Black Mtn and Goat Rock overlook the canyons of Little Sulphur Cr and Sausal Cr.
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This is the sole edition of this map. No revisions or reprints were ever made.
1920 · Healdsburg
USGS Topo · 1:62,500
1921 · Kelseyville
USGS Topo · 1:62,500
1927 · Calistoga
USGS Topo · 1:62,500
1933 · Healdsburg
USGS Topo · 1:48,000
1940 · Healdsburg
USGS Topo · 1:62,500
1943 · Calistoga
USGS Topo · 1:62,500
1943 · Kelseyville
USGS Topo · 1:62,500
1945 · Calistoga
USGS Topo · 1:62,500
1945 · Lower Lake
USGS Topo · 1:62,500
1947 · Santa Rosa
USGS Topo · 1:250,000