
The Tualatin River meanders through a landscape of agricultural valleys and timbered ridges in this pre-war survey. This era shows the region’s development through its extensive network of country schools, including Grabel School, Rosedale School, and Mountainside School, reflecting a settled rural society. Industrial and communication infrastructure is notably represented by the Mackay Radio and Telegraph Co KK-KGH installation in the northwest and various rail spurs like Cahalin Spur serving the hinterlands.
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This is the sole edition of this map. No revisions or reprints were ever made.
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