
The Purgatoire River carves a path through the Stonewall Valley in this survey of southern Colorado, where the transition from high plains to the Sangre de Cristo foothills is marked by distinct geological boundaries. The settlement of Stonewall sits at the junction of the river and the Middle Fork, serving as a gateway to the San Isabel National Forest. This era shows a landscape managed for both water resources and recreation, featuring a network of infrastructure including an aqueduct, a ditch, and a Filtration Plant near Coal Creek.
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2 editions found
1891 · Spanish Peaks
USGS Topo · 1:125,000
1893 · Spanish Peaks
USGS Topo · 1:125,000
1895 · Spanish Peaks
USGS Topo · 1:125,000
1897 · Spanish Peaks
USGS Topo · 1:125,000
1900 · Spanish Peaks
USGS Topo · 1:125,000
1954 · Trinidad
USGS Topo · 1:250,000
1955 · Trinidad
USGS Topo · 1:250,000
1958 · Trinidad
USGS Topo · 1:250,000
1959 · Trinidad
USGS Topo · 1:250,000
1967 · Cucharas Pass
USGS Topo · 1:24,000