
Backbone Mountain and the prominent ridge of Kully Chaha define the terrain of the Arkansas-Oklahoma borderlands in the late 1940s. The region is characterized by a dense network of coal mining operations, with numerous extraction sites like the Frazier Mine, Arkois Mine, and Woodson Mine dotting the landscape near Midland and Huntington. This industrial activity is supported by a robust rail system, including the Midland Valley and the Chicago Rock Island and Pacific railroads, which weave through the valleys alongside small settlements like Old Jenny Lind and Bonanza.
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1879 · Poteau Mountain
USGS Topo · 1:62,500
1879 · Fort Smith
USGS Topo · 1:62,500
1887 · Poteau Mountain #1
USGS Topo · 1:62,500
1887 · Van Buren
USGS Topo · 1:62,500
1887 · Poteau Mountain #2
USGS Topo · 1:62,500
1887 · Greenwood
USGS Topo · 1:62,500
1890 · Fort Smith
USGS Topo · 1:125,000
1890 · Poteau Mountain
USGS Topo · 1:125,000
1899 · Poteau Mountain
USGS Topo · 1:125,000
1900 · Sallisaw
USGS Topo · 1:125,000