Illinois, Northern District Naturalization Index, 1840-1950

This is NARA publication M1285: Soundex Index to Naturalization Petitions for the United States District and Circuit Courts, Northern District of Illinois and Immigration and Naturalization Service District 9, 1840-1950. This card file is an index to petitions for residents of northern Illinois, northwestern Indiana, southern and eastern Wisconsin, and eastern Iowa. Filed by soundex codes the entries prior to 1906 differ from those after 1906. After 1906 the entries generally include the name of petitioner; address; name of the court in which naturalization occurred; certificate, petition, or other identifying document number; country and date of birth; date and place of arrival in the United States; date of naturalization; and name and address of witnesses. Although space was provided for this information, it is not always present on every card. Index cards for naturalizations taking place prior to 1906 typically contain only the name of the petitioner, the name of the court in which naturalization occurred, document number, country of origin, and the date of naturalization.