Klein v. United States , 51 S. Ct. 398 ( 1931 )
May v. Heiner , 50 S. Ct. 286 ( 1930 )
Helvering v. Bullard , 58 S. Ct. 565 ( 1938 )
Helvering v. Hallock , 60 S. Ct. 444 ( 1940 )
Commissioner v. Estate of Church , 69 S. Ct. 322 ( 1949 )
Estate of Spiegel v. Commissioner , 69 S. Ct. 301 ( 1949 )