The mission was originally organized as the Northwestern States Mission on 6 May 1878 and headquartered in Chicago, Illinois. The mission name changed to the Northern States Mission on 20 July 1889.
Not to be confused with the Northwestern States Mission organized on 26 July 1897 and headquartered in Portland, Oregon.
The Northern States Mission was renamed as the Illinois Mission on 17 June 1973, at that time it consisted of the state of Illinois, except the Illinois portion of the St. Louis, Missouri Stake. It contained a small strip of eastern Iowa, which included Keosauqua, Fort Madison, and Burlington; plus a small portion of western Indiana around LaPorte, Hammond, and Gary.
Media
Northern States (1878 - ?) Profile
Conference Presidents

Northern States Missionaries

Missionaries of the Michigan Conference

North Ohio District Missionaries

Northern States Mission Home in Chicago

Northern States Missionaries
Lady Missionaries of the Northern States Mission

United States Mission Presidents

Publications Office Staff
North Ohio Conference

Navuoo Centennial Event 1939

Tirza Amelia Hansen (1878-1966) Missionary, Circa 1913