
The Tualatin River valley and the Chehalem Mountains form the backbone of this wartime survey, showing a landscape defined by timber extraction and agriculture during the early 1940s. The Stimson Lumber Company Railroad winds into the northwestern hills to reach the Stimson Lumber Camp, illustrating the era's heavy industrial reliance on rail for forest operations. Further south, the Southern Pacific line connects established agricultural centers like Yamhill, Carlton, and Gaston.
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2 editions found
1915 · Hillsboro
USGS Topo · 1:62,500
1916 · Tualatin
USGS Topo · 1:62,500
1918 · Hillsboro
USGS Topo · 1:62,500
1923 · Mount Angel
USGS Topo · 1:62,500
1924 · Mc Minnville
USGS Topo · 1:48,000
1926 · Mc Minnville
USGS Topo · 1:62,500
1939 · Tualatin
USGS Topo · 1:62,500
1940 · McMinnville
USGS Topo · 1:62,500
1940 · Tualatin
USGS Topo · 1:62,500
1940 · Hillsboro
USGS Topo · 1:62,500