
Simpson Park Mountains rise sharply above the southern portion of this Lander County landscape, defining the hydrology and access routes of the region. The drainage patterns are clearly marked by the paths of Callaghan Cr and Indian Cr as they flow into the broad expanse of Grass Valley to the northwest. This area is characterized by a network of seasonal water sources and canyons that have likely served as vital landmarks for ranchers and travelers in the Great Basin.
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This is the sole edition of this map. No revisions or reprints were ever made.
1926 · Roberts Mountains
USGS Topo · 1:250,000
1929 · Roberts Mountains
USGS Topo · 1:250,000
1955 · Millett
USGS Topo · 1:250,000
1956 · Mount Callaghan
USGS Topo · 1:62,500
1956 · Walti Hot Springs
USGS Topo · 1:62,500
1956 · Hall Creek
USGS Topo · 1:62,500
1956 · Ackerman Canyon
USGS Topo · 1:62,500
1959 · Millett
USGS Topo · 1:250,000
1979 · Simpson Park Mtns
USGS Topo · 1:100,000
1986 · Fagin Mountain
USGS Topo · 1:24,000