1840 Federal Census of Jefferson County, Illinois United States. Census Office Published: 1994 Total Pages: 44 Get eBook
1840 Federal Census of Lake County, Illinois Libertyville-Mundelein Historical Society. Genealogy Group Published: 1978 Total Pages: 108 Get eBook
1840 Federal Census of Williamson County, Illinois Helen Sutt Lind Published: 200? Total Pages: 77 Get eBook
1840 Federal Census, Coles County, Illinois Rose Jones Talbott Published: 1984 Total Pages: 142 Get eBook
