The Minnesota Historical Society Library holds naturalization records for all 87 counties and the Minnesota Supreme Court. These records are on microfilm and organized by county. To find the records of a specific person, follow the steps listed in this research guide:
Gale Family Library
Minnesota Historical Society Library
Located on the Second Floor of the Minnesota History Center
345 West Kellogg Blvd.
St. Paul, MN 55102
Thursday to Saturday: 10am to 4pm
Sunday to Wednesday: Closed