Helvering v. Independent Life Insurance ( 1934 )
Helvering v. Ohio Leather Co. ( 1942 )
New Colonial Ice Co. v. Helvering ( 1934 )
Elizabeth B. Nammack v. Commissioner of Internal Revenue ( 1972 )
Ruth K. Child v. United States ( 1976 )
John W. Crowe v. Commissioner of Internal Revenue ( 1968 )