R. C. Tway Coal Sales Co. v. United States , 3 F. Supp. 668 ( 1933 )
Helvering v. Taylor , 55 S. Ct. 287 ( 1935 )
New Colonial Ice Co. v. Helvering , 54 S. Ct. 788 ( 1934 )
Helvering v. Independent Life Insurance , 54 S. Ct. 758 ( 1934 )