
Sugarloaf Ridge and the Sonoma Mountains frame this 1950s landscape of the upper Sonoma Valley, where agricultural ranching meets the early institutional growth of the region. The map documents the Los Guilicos School For Girls and several local educational and community landmarks like the Dunbar Union Sch and McCormack Ranch. Transportation patterns are transitioning during this era, shown by the presence of the Northwestern Pacific Railroad Grade winding through the valley floor near settlements like Kenwood and Lawndale. The terrain is marked by numerous water sources, including Los Guilicos Warm Springs and the headwaters of Santa Rosa Creek, while several quarries on the slopes of Bennett Mtn suggest the active local industry of the period. Peaks such as Mt Hood and Bald Mtn dominate the northern horizons, illustrating the geographic isolation of these valley communities before mid-century expansion.
49 named features on this map. Tap any name to fly to it.
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7 editions found
1902 · Napa
USGS Topo · 1:125,000
1916 · Santa Rosa
USGS Topo · 1:62,500
1927 · Calistoga
USGS Topo · 1:62,500
1942 · Sonoma
USGS Topo · 1:62,500
1942 · St. Helena
USGS Topo · 1:62,500
1943 · Calistoga
USGS Topo · 1:62,500
1944 · Santa Rosa
USGS Topo · 1:62,500
1945 · Calistoga
USGS Topo · 1:62,500
1945 · St. Helena
USGS Topo · 1:62,500
1947 · Santa Rosa
USGS Topo · 1:250,000