
Portland south into the Willamette River valley reveals a landscape of mid-century suburban expansion and established academic and recreational institutions. The terrain is defined by the Tualatin Mountains, where Council Crest and Marquam Hill overlook the city, while Mt Sylvania rises further south. This era shows the dense cluster of neighborhoods including Fulton, Hillsdale, and Multnomah, as well as the transition into Clackamas County toward the lakeside community of South Oswego.
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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