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Minnesota, U.S., Federal Naturalization Records, 1896-1989
Ancestry.com
Naturalization Index, Minnesota, 1930-1988. Records of District Courts of the United States, Record Group 21. National Archives at Chicago, Illinois.
Naturalization Records From U.S. District Courts. Records of District Courts of the United States, Record Group 21. National Archives at Chicago, Illinois.
Naturalization Records From U.S. Circuit Courts. Records of District Courts of the United States, Record Group 21. National Archives at Chicago, Illinois.