Irma and the smaller settlement of Otis anchor this section of north-central Wisconsin, where the landscape is defined by the winding Wisconsin River and a dense network of glacial water bodies. The Grandmother Falls WP185 Dam regulates the northern reaches of the river, creating the Grandmother Flowage 2269, while the surrounding terrain is marked by significant rises like Irma Hill and Chase Hill.
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This is the sole edition of this map. No revisions or reprints were ever made.
1899 · Wausau
USGS Topo · 1:125,000
1902 · Wausau
USGS Topo · 1:125,000
1902 · Marathon
USGS Topo · 1:125,000
1950 · Tomahawk
USGS Topo · 1:48,000
1950 · Spirit Falls
USGS Topo · 1:48,000
1951 · Merrill
USGS Topo · 1:48,000
1951 · Hamburg
USGS Topo · 1:48,000
1952 · Spirit Falls
USGS Topo · 1:48,000
1952 · Tomahawk
USGS Topo · 1:48,000
1954 · Iron Mountain
USGS Topo · 1:250,000