| 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, United States Genealogy|Oklahoma]] county courts can be found on [http://www.genealogy.com/00000265.html http://www.genealogy.com/00000265.html]. The FamilySearch Library has microfilm copies from some counties including Beaver, Beckham, Blaine, Bryan, Caddo, Canadian, Cimarron, Cleveland, Comanche, Cotton, Dewey, Ellis, Garvin, Greer, Harper, Kay, Kingfisher, Latimer, Logan, Major, McClain, McCurtain, Noble, Oklahoma, Roger Mills, Rogers, Texas, Tillman, Tulsa, Washita, Woods, Woodward. | | 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, United States Genealogy|Oklahoma]] county courts can be found on [http://www.genealogy.com/00000265.html http://www.genealogy.com/00000265.html]. The FamilySearch Library has microfilm copies from some counties including Beaver, Beckham, Blaine, Bryan, Caddo, Canadian, Cimarron, Cleveland, Comanche, Cotton, Dewey, Ellis, Garvin, Greer, Harper, Kay, Kingfisher, Latimer, Logan, Major, McClain, McCurtain, Noble, Oklahoma, Roger Mills, Rogers, Texas, Tillman, Tulsa, Washita, Woods, Woodward. |