Helvering v. Elbe Oil Land Development Co. ( 1938 )
Anderson v. Helvering ( 1940 )
Burnet v. Harmel ( 1932 )
Pettit v. Commissioner of Internal Revenue ( 1941 )
Cullen v. Commissioner of Internal Revenue ( 1941 )
McLean v. Commissioner ( 1940 )
Palmer v. Bender ( 1932 )