Sigma and its surrounding wetlands occupy a central role in this northern Michigan landscape, where the headwaters of two major river systems begin their descent. The N Br Manistee River and the N Br Boardman River drain the high ground, while extensive marshlands like Sigma Swamp, Carlisle Swamp, and Baker Swamp illustrate the glacial heritage of Kalkaska County. Local heritage is preserved at the Excelsior Cem and Oliver Cem, which serve as quiet landmarks for researchers tracing early residents. A network of country roads connects smaller settlements and locations such as Cotton, O'Neil, and Spencer. Recreational geography is represented by the Shore to Shore Trail cutting through the northeast, while numerous water bodies like Crawford Lake and Lincoln Lake dot the terrain, showing a land defined by its water and woods in the early 21st century.
94 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 · Black Creek
USGS Topo · 1:24,000
1949 · Fletcher
USGS Topo · 1:62,500
1950 · Fletcher
USGS Topo · 1:24,000
1954 · Traverse City
USGS Topo · 1:250,000
1956 · Alba
USGS Topo · 1:62,500
1956 · Mancelona
USGS Topo · 1:62,500
1956 · Kalkaska
USGS Topo · 1:62,500
1958 · Traverse City
USGS Topo · 1:250,000
1983 · Traverse City
USGS Topo · 1:100,000
1983 · Grayling
USGS Topo · 1:100,000