This historical map portrays the area of The Geysers in 2012, primarily covering Caldwell Pines as well as portions of Black Oaks, Glenbrook, and Mercuryville. Featuring a scale of 1:24,000, this map provides a highly detailed snapshot of the terrain, roads, buildings, counties, and historical landmarks in the The Geysers region at the time. Published in 2012, it is the sole known edition of this map.
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