Old Illinois County Maps

Madison St Clair Monroe Counties Illinois - Campbell 1870 - 23 x 27.25
Mason County Illinois - Ogle 1891 - 23 x 38.06
Mcdonough County Illinois  - Warner 1870 - 23 x 28.01
Mchenry Boone Counties Illinois  - Warner 1870 - 23 x 26.61
McHenry County Illinois - Hunter 1903 - 23.33 x 23
Mchenry Kane Cook Will Counties Illinois - Campbell 1870 - 23 x 31.73
Mclean Bloomington Counties Illinois - Hambaugh 1886 - 30 x 23
Mclean County Illinois  - Warner 1870 - 23 x 27.41
Mclean County Illinois  - Warner 1876 - 27.69 x 23
Mclean County Illinois - Ogle 1914 - 23 x 38.83
Mclean Piatt DeWitt Counties Illinois - Campbell 1870 - 23 x 28.24
Mercer County Illinois  - Warner 1870 - 23 x 27.68