
Hydraulic mining scars and tailings piles define the rugged landscape around Weaverville and Douglas City in this late 20th-century survey. The colossal scale of past industrial operations is evident at the La Grange Mine (Hydraulic) near Oregon Mountain Summit and the Union Hill Mine (Hydraulic) further south, where man-made excavations and Tailings follow the winding course of the Trinity River.
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This is the sole edition of this map. No revisions or reprints were ever made.
1890 · Red Bluff
USGS Topo · 1:250,000
1894 · Red Bluff
USGS Topo · 1:250,000
1909 · Big Bar
USGS Topo · 1:96,000
1913 · Weaverville
USGS Topo · 1:125,000
1915 · Big Bar and Vicinity
USGS Topo · 1:250,000
1950 · Minersville
USGS Topo · 1:62,500
1950 · Weaverville
USGS Topo · 1:62,500
1951 · Hayfork
USGS Topo · 1:62,500
1951 · Helena
USGS Topo · 1:62,500
1952 · Weaverville
USGS Topo · 1:62,500