Humphrey v. Denney , 757 P.2d 833 ( 1988 )
Kerfoot-Bell Co. v. Kerfoot , 30 Okla. 19 ( 1911 )
Keck v. Oklahoma Tax Commission , 188 Okla. 257 ( 1940 )
Cowart v. Piper Aircraft Corp. , 665 P.2d 315 ( 1983 )