
Portland and Vancouver dominate the confluence of the Willamette River and Columbia River, serving as the central urban hub in this mid-1970s revision of a 1950s survey. The map reveals the intricate water network of the Tualatin River valley and the industrial importance of Sauvie Island at the river junction. Moving west toward the Pacific Ocean, the landscape shifts into the dense timberlands of the Coast Range and the high peaks of Saddle Mountain, eventually reaching coastal settlements like Seaside, Cannon Beach, and Tillamook. This era captures the region's post-war suburban expansion, with developed clusters in Beaverton, Hillsboro, and Gresham appearing alongside long-established timber and agricultural corridors. The presence of the S P & S Ry and S P Ry railroads underscores the vital transportation links between the coast, the valley, and the expanding metropolitan core.
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3 editions found
1897 · Portland
USGS Topo · 1:62,500
1905 · Portland
USGS Topo · 1:62,500
1911 · Boring
USGS Topo · 1:48,000
1914 · Boring
USGS Topo · 1:62,500
1914 · Oregon City
USGS Topo · 1:62,500
1915 · Rickreall
USGS Topo · 1:31,680
1915 · Hillsboro
USGS Topo · 1:62,500
1915 · Eola
USGS Topo · 1:31,680
1916 · Tualatin
USGS Topo · 1:62,500
1916 · Estacada
USGS Topo · 1:125,000