
Siskiyou Pass serves as the central focal point for this 1983 study of the high-elevation boundary between Oregon and California. The landscape is defined by the technical challenges of crossing the Siskiyou Mountains, visible through the complex engineering of the Steinman railroad loop and multiple tunnels. The transition from early transit to modern infrastructure is evident in the presence of the Old Road alongside the Pacific Highway, while the Pacific Scenic Highway winds through the southern terrain.
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3 editions found
1886 · Shasta
USGS Topo · 1:250,000
1891 · Ashland
USGS Topo · 1:250,000
1893 · Ashland
USGS Topo · 1:250,000
1894 · Shasta
USGS Topo · 1:250,000
1897 · Ashland
USGS Topo · 1:250,000
1922 · Shasta Valley Sheet No 15
USGS Topo · 1:24,000
1932 · Yreka
USGS Topo · 1:96,000
1934 · Macdoel
USGS Topo · 1:96,000
1938 · Medford
USGS Topo · 1:125,000
1939 · Yreka
USGS Topo · 1:125,000