Polk County, Minn., District Court, Naturalization Records dating 1870-1957.
Congress passed the first naturalization law in 1790, which was amended frequently to control who could become a citizen. Federal and state courts and several federal agencies shared jurisdiction over naturalization. Changes in laws produced variations in the records kept. In 1906, the forms and the information required were standardized to contain birth dates of family members and other information.
From the description of Polk County, District Court, naturalization records, 1870-1957 [microform]. (University of North Dakota). WorldCat record id: 21963896