
Agricultural development in the Red River Valley is clearly defined on this mid-1960s survey of Polk County. The landscape is dominated by a systematic drainage network essential for farming this flat terrain, including County Ditch No 63, County Ditch No 15, and County Ditch No 100. These man-made channels intersect with natural waterways like Burnham Creek, reflecting the massive engineering efforts required to reclaim the land for production.
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This is the sole edition of this map. No revisions or reprints were ever made.
1918 · Red Lake Falls
USGS Topo · 1:62,500
1919 · Beltrami
USGS Topo · 1:62,500
1952 · Red Lake Falls
USGS Topo · 1:62,500
1952 · Grand Forks
USGS Topo · 1:250,000
1953 · Crookston
USGS Topo · 1:62,500
1956 · Grand Forks
USGS Topo · 1:250,000
1964 · Beltrami
USGS Topo · 1:24,000
1964 · Beltrami SW
USGS Topo · 1:24,000
1964 · Girard
USGS Topo · 1:24,000
1965 · Melvin
USGS Topo · 1:24,000