1953 Map of Weiser Pass

About this map

The Dallas Oil Field and the Derby Dome Oil Field dominate the industrial footprint of this central Wyoming landscape, reflecting the region's energy development during the mid-20th century. A refinery and a network of oil and gas wells are situated near the Little Popo Agie River in the northwest, while the Derby Dome activity centers near Twin Creek. This energy-driven economy is juxtaposed against a traditional ranching environment, with several family-named landmarks such as the McKinney Ranch, Matteson Ranch, and Hancock Ranch scattered throughout the territory. The topography is defined by the prominent Cedar Ridge and Blue Cedar Ridge, which divide the drainage systems. Water sources are critical in this arid terrain, evidenced by the numerous named springs like Big Spring and Johnny Spring, and irrigation efforts like the Tweed Ditch. To the south, Weiser Pass and Commissary Hill provide high-elevation landmarks overlooking Onion Flats and Devils Canyon.