Lake Koshkonong dominates the northern landscape of this Rock County region, with its irregular shoreline defined by Thiebeau Point, Stony Point, and the elevated Charlie Bluff. The terrain here transitions from these glacial water bodies and wetlands, such as Cranberry Marsh and Grass Lake, into the structured residential and agricultural grids of Milton and Milton Junction. The southern portion of the map reveals the northern extent of Janesville, marking the area's ongoing suburban development near the Jefferson and Rock County line.
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This is the sole edition of this map. No revisions or reprints were ever made.
1890 · Stoughton
USGS Topo · 1:62,500
1891 · Koshkonong
USGS Topo · 1:62,500
1891 · Janesville
USGS Topo · 1:62,500
1893 · Janesville
USGS Topo · 1:62,500
1893 · Shopiere
USGS Topo · 1:62,500
1894 · Koshkonong
USGS Topo · 1:62,500
1906 · Koshkonong
USGS Topo · 1:62,500
1954 · Rockford
USGS Topo · 1:250,000
1955 · Rockford
USGS Topo · 1:250,000
1958 · Rockford
USGS Topo · 1:250,000