Roberts v. Commissioner of Internal Revenue , 176 F.2d 221 ( 1949 )
Poorman v. Commissioner of Internal Revenue , 131 F.2d 946 ( 1942 )
Helvering v. New York Trust Co. , 54 S. Ct. 806 ( 1934 )
Bogardus v. Commissioner , 58 S. Ct. 61 ( 1937 )
Commissioner v. LoBue , 76 S. Ct. 800 ( 1956 )
Commissioner v. Duberstein , 80 S. Ct. 1190 ( 1960 )