Tassajara and the historic ranching lands of the Black Hills characterize this corridor of the Diablo Range in the early 21st century. The map details the transition from the concentrated settlement at Tassajara toward the open protected spaces of the north and east, including the extensive drainage basin of Marsh Cr and the waters of the Los Vaqueros Reservoir. Regional transport is defined by long-established routes like Camino Tassajara and Morgan Territory Rd, which wind through a landscape shaped by creek systems such as Tassajara Cr and Sycamore Cr.
26 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1896 · Mt. Diablo
USGS Topo · 1:62,500
1898 · Mt. Diablo
USGS Topo · 1:62,500
1906 · Pleasanton
USGS Topo · 1:62,500
1907 · Tesla
USGS Topo · 1:62,500
1911 · Byron Hot Springs
USGS Topo · 1:31,680
1914 · Brentwood
USGS Topo · 1:31,680
1916 · Lone Tree Valley
USGS Topo · 1:31,680
1916 · Byron Hot Springs
USGS Topo · 1:31,680
1916 · Byron
USGS Topo · 1:62,500
1940 · Byron
USGS Topo · 1:62,500