This historical map portrays the area of Ornbaun Valley in 2012, primarily covering Boonville as well as portions of Old Ornbaun Hot Springs. 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 Ornbaun Valley 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 · Ukiah
USGS Topo · 1:62,500
1938 · Hopland
USGS Topo · 1:62,500
1943 · Boonville
USGS Topo · 1:62,500
1943 · Hopland
USGS Topo · 1:62,500
1943 · Ornbaun
USGS Topo · 1:62,500
1944 · Ukiah
USGS Topo · 1:62,500
1944 · Ornbaun
USGS Topo · 1:62,500
1944 · Hopland
USGS Topo · 1:62,500
1947 · Santa Rosa
USGS Topo · 1:250,000
1949 · Santa Rosa
USGS Topo · 1:250,000