Good eveving, I am in need of advice as to where I might locate a naturalization record for Frank LUEDTKE who emigrated in 1866 at the age of two with his parents, Wilhelm/ William and Emilie [ Schumacher] LUEDTKE. Have found Frank and his family in the 1900, 1910;20 and 30 censuses Lakeview Township, Carver Co. Understand his farm bordered the Carver and Hennepin County lines. The 1920 census shows the year of naturalization as 1897 and the 1930 states ? 1871. Is there an index available? Appreciate any help. Marge Perry On a beautiful, cool, fall Southern California evening.