Perkins v. State , 6 Tex. Sup. Ct. J. 413 ( 1963 )
Eddins-Walcher Butane Company v. Calvert , 156 Tex. 587 ( 1957 )
Jessen Associates, Inc. v. Bullock , 19 Tex. Sup. Ct. J. 117 ( 1975 )