Immigrants seeking to become citizens often applied at a U.S. District Court or a district court at a county courthouse. You can obtain copies of declarations, certificates, and other records by contacting the clerk's office in the county. Contact details for [[Oklahoma Genealogy|Oklahoma]] county courts can be found on [http://www.genealogy.com/00000265.html http://www.genealogy.com/00000265.html]. The Family History Library has microfilm copies from some counties. | Immigrants seeking to become citizens often applied at a U.S. District Court or a district court at a county courthouse. You can obtain copies of declarations, certificates, and other records by contacting the clerk's office in the county. Contact details for [[Oklahoma Genealogy|Oklahoma]] county courts can be found on [http://www.genealogy.com/00000265.html http://www.genealogy.com/00000265.html]. The Family History Library has microfilm copies from some counties. |