Harrison v. Schaffner , 61 S. Ct. 759 ( 1941 )
Helvering v. Fuller , 60 S. Ct. 784 ( 1940 )
Helvering v. Stuart , 63 S. Ct. 140 ( 1942 )
Helvering v. Horst , 61 S. Ct. 144 ( 1940 )
Helvering v. Eubank , 61 S. Ct. 149 ( 1941 )