
Sulphur Springs Mountain and the surrounding canyons define the landscape of the Napa and Solano county border in the early 1950s. The region is marked by a mix of specialized industrial operations and emerging residential developments. Mining history is preserved at the St John Mine and several other unlabeled shafts, while the southern reach shows the footprint of the Permanente Foundation Hospital Area and the County Fairgrounds.
35 named features on this map. Tap any name to fly to it.
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9 editions found
1896 · Carquinez Strait
USGS Topo · 1:62,500
1898 · Karquines
USGS Topo · 1:62,500
1901 · Karquines
USGS Topo · 1:62,500
1902 · Napa
USGS Topo · 1:125,000
1916 · Mare Island
USGS Topo · 1:62,500
1921 · Mt. Vaca
USGS Topo · 1:62,500
1940 · Carquinez Strait
USGS Topo · 1:62,500
1942 · Mare Island
USGS Topo · 1:62,500
1942 · Carquinez
USGS Topo · 1:62,500
1942 · Sonoma
USGS Topo · 1:62,500