Estate of Tyson , 191 Pa. 218 ( 1899 )
Fassitt v. Seip , 240 Pa. 406 ( 1913 )
Freuler v. Helvering , 54 S. Ct. 308 ( 1934 )
Helvering v. Salvage , 56 S. Ct. 375 ( 1936 )
Blair v. Commissioner , 57 S. Ct. 330 ( 1937 )
Watson's Estate , 241 Pa. 271 ( 1913 )