
Earlham occupies the northeastern corner of this Madison County landscape, where the agricultural grid meets the modern corridor of Interstate 80. The terrain is defined by the winding course of the North River and its many tributaries, including Jim Cr, Penn Creek, and Twin Creek. These waterways carve through the township boundaries of Penn, Jackson, and Harrison, creating a topography of varied elevations compared to the flatter uplands.
26 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1949 · Adel
USGS Topo · 1:62,500
1951 · Adel
USGS Topo · 1:62,500
1952 · Panora
USGS Topo · 1:62,500
1952 · Winterset
USGS Topo · 1:62,500
1954 · Greenfield
USGS Topo · 1:62,500
1954 · Omaha
USGS Topo · 1:250,000
1957 · Omaha
USGS Topo · 1:250,000
1958 · Omaha
USGS Topo · 1:250,000
1982 · Redfield
USGS Topo · 1:24,000
1982 · Adel
USGS Topo · 1:24,000