Hanna v. Plumer , 85 S. Ct. 1136 ( 1965 )
Erie Railroad v. Tompkins , 58 S. Ct. 817 ( 1938 )
Ragan v. Merchants Transfer & Warehouse Co. , 69 S. Ct. 1233 ( 1949 )
Walker v. Armco Steel Corp. , 100 S. Ct. 1978 ( 1980 )