
The Columbia River dominates this mid-1960s landscape, serving as the border between Kittitas and Grant counties. This era reflects a period of significant hydroelectric development, anchored by the Wanapum Dam and the controlled water levels of Wanapum Pond. The industrial and natural character of the region is evident in the transition from the irrigated reaches of the Royal Slope to the protected lands of the Columbia Nat Wildlife Refuge. Along the western bank, the Ginkgo Petrified Forest State Park and Ginkgo Museum highlight the unique geological heritage near Vantage. The transportation network of the day is anchored by the Chicago Milwaukee St Paul and Pacific railroad, which threads through the Sentinel Mountains at Sentinel Gap and serves the small riverside settlements of Beverly and Schwana.
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This is the sole edition of this map. No revisions or reprints were ever made.
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