
Mount Boardman towers over a complex junction of four California counties where the Diablo Range divides Santa Clara, Stanislaus, Alameda, and San Joaquin. This high-elevation terrain is defined by its isolation and specialized land use, containing the Naval Bombing Range in the southeast and the remote San Antonio Ranger Station further west. Settlement is nearly non-existent, represented primarily by the Harney School and the Stanislaus County Ranch, suggesting a landscape of scattered homesteads and seasonal ranching rather than concentrated townships.
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This is the sole edition of this map. No revisions or reprints were ever made.
1897 · Mt. Hamilton
USGS Topo · 1:62,500
1907 · Tesla
USGS Topo · 1:62,500
1913 · Romain
USGS Topo · 1:31,680
1916 · Romain
USGS Topo · 1:31,680
1922 · Carbona
USGS Topo · 1:62,500
1938 · Mt. Boardman
USGS Topo · 1:62,500
1942 · Mt. Hamilton
USGS Topo · 1:62,500
1942 · Carbona
USGS Topo · 1:62,500
1942 · Mt. Boardman
USGS Topo · 1:62,500
1942 · Altamont
USGS Topo · 1:62,500