Guinness v. United States ( 1947 )
Helvering v. Horst ( 1940 )
Helvering v. Twin Bell Oil Syndicate ( 1934 )
Burnet v. Harmel ( 1932 )
Helvering v. Clifford ( 1940 )
General Utilities & Operating Co. v. Helvering ( 1935 )
Lucas v. Earl ( 1930 )
Harrison v. Schaffner ( 1941 )