
Linnton and the industrial corridors of the Willamette River are captured in this mid-1970s orthophotograph, providing a high-altitude perspective on the transition from forested ridges to dense urban and industrial development. The imagery highlights the sharp contrast between the wooded hillsides and the structured grids of settlements like St Johns and Aloha. Produced by the U.S. Geological Survey in cooperation with the Soil Conservation Service, this orthophotoquad uses aerial imagery from September 1975 to map the landscape as it appeared before further suburban expansion reshaped the region. Researchers can observe the mid-century layout of shipping facilities, rail lines, and the evolving footprint of residential neighborhoods during a period of significant regional growth.
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1897 · Portland
USGS Topo · 1:62,500
1905 · Portland
USGS Topo · 1:62,500
1914 · Oregon City
USGS Topo · 1:62,500
1915 · Hillsboro
USGS Topo · 1:62,500
1916 · Tualatin
USGS Topo · 1:62,500
1918 · Hillsboro
USGS Topo · 1:62,500
1939 · Oregon City
USGS Topo · 1:62,500
1939 · Tualatin
USGS Topo · 1:62,500
1940 · Tualatin
USGS Topo · 1:62,500
1940 · Hillsboro
USGS Topo · 1:62,500