Kansas Naturalization and Citizenship
Naturalization records up to 1906 have been kept in the Topeka Office of the U.S. Circuit Court and by the clerk of the district court of each county. Some records from the Topeka Circuit Court were transferred to the National Archives—Central Plains Region in Kansas City, Missouri. This office also has U.S. District Court records from 1916 to 1966. The Family History Library has acquired some copies of naturalization records under the county, and records from the District court under the state.
For naturalization records after September 1906, contact the National Archives—Central Plains Region at http://www.archives.gov/central-plains/kansas-city/ or the local office of the United States Citizenship and Immigration Services (formerly INS).