Blum v. Commissioner of Internal Revenue ( 1950 )
William H. Hagan v. United States ( 1950 )
Lucas v. Earl ( 1930 )
Helvering v. F. & R. Lazarus & Co. ( 1939 )
Wilmington Trust Co. v. Helvering ( 1942 )
Griffiths v. Commissioner ( 1939 )
Commissioner v. Flowers ( 1946 )