US Genealogy Map Project
Image provided by "Graphic Maps"
Image provided by "Graphic Maps"
1783 Acquired by treaty from Great Britain: Lands North of River
Ohio, bordered on the West by the Mississippi River, with a Northern
boundary starting at Lake of the Woods in the NorthWest continuing East
through the center points of Lakes Superior, Huron, Erie and Ontario.
1785 Massachusetts relinquishs claims to Southern portions of Wisconsin.
1787 "NorthWest Territory" organized from areas of Wisconsin,
Michigan, Illinois, Indiana, majority of Ohio, and NorthEast Minnesota.
1800 Indiana Territory organized from NorthWest Territory, taking
Wisconsin, Illinois, Indiana, NorthEast Minnesota and West half of
Michigan. "New" NorthWest Territory made up of Ohio and East half
of Michigan.
1809 Illinois Territory organized from Indiana Territory, consisting of
Wisconsin, Illinois and NorthEast Minnesota. Indiana and Upper Michigan
remaining in Indiana Territory.
1818 Illinois Territory dissolved, remainder added to Michigan Territory.
1836 Wisconsin Territory created from Michigan Territory. Includes
Wisconsin, Eastern Minn., and the area "East of the Missouri River"
(Central/East N.Dakota and S.Dakota, Iowa and Western half of Minnesota.)
1838 Iowa Territory created from Wisconsin Territory. Consists of
the area "East of the Missouri River" (Central/East N.Dakota and
S.Dakota, Iowa and Western half of Minnesota.) Remaining Wisconsin
Territory consists of Wisconsin and Eastern Minn.
1848 Wisconsin admitted to the Union as 30th State.
1849 Wisconsin Territory dissolved, remainder (Eastern Minn.)
included in newly organized Minnesota Territory.
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12/1998 M.A.Leonard, Last Update-07/15/2006