
The Blue Mountains dominate the high-altitude landscape of Eastern Oregon in the late 1950s, a period when the timber and ranching industries shaped local infrastructure. Centered on Canyon City and the neighboring town of John Day, this survey documents a network of isolated settlements and mountain outposts. The winding course of the John Day River and its various forks provide the primary corridors for travel, while the extensive boundaries of the Malheur National Forest and Whitman National Forest underscore the region's reliance on public lands. Significant industrial shifts are evident in the marking of the Sumpter Valley RR (Abandoned), illustrating the decline of early narrow-gauge rail lines that once served the gold mines and sawmills of Sumpter. From the cattle ranges of Bear Valley to the geological landmarks of John Day Fossil Beds State Park, the map captures the transition from frontier extraction to mid-century resource management.
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