England v. Louisiana State Board of Medical Examiners , 84 S. Ct. 461 ( 1964 )
Railroad Comm'n of Tex. v. Pullman Co. , 61 S. Ct. 643 ( 1941 )
Burford v. Sun Oil Co. , 63 S. Ct. 1098 ( 1943 )
Ruhlin v. New York Life Insurance , 58 S. Ct. 860 ( 1938 )