
The San Luis Valley serves as the focal point for this 1920 survey, where a complex network of irrigation canals like the Empire Canal and Main Canal supported early 20th-century agriculture. Near the southern edge, the Denver and Rio Grande Railroad winds through the high country, serving remote outposts such as Toltec Section House and Los Pinos Siding. This era saw the establishment of numerous rural community centers, evidenced by the cluster of schools including Bronson School, Carmel School, and Morgan School.
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4 editions found
1913 · Summitville
USGS Topo · 1:125,000
1914 · Creede
USGS Topo · 1:125,000
1915 · Summitville
USGS Topo · 1:125,000
1915 · Del Norte
USGS Topo · 1:125,000
1916 · Creede
USGS Topo · 1:125,000
1917 · Del Norte
USGS Topo · 1:125,000
1918 · Tusas
USGS Topo · 1:125,000
1922 · Conejos
USGS Topo · 1:125,000
1945 · Durango
USGS Topo · 1:250,000
1953 · Durango
USGS Topo · 1:250,000