Polokow Corp. v. Industrial Com. , 336 Ill. 395 ( 1929 )
Old Colony Trust Co. v. Commissioner , 49 S. Ct. 499 ( 1929 )
United States v. Boston & Maine Railroad , 49 S. Ct. 505 ( 1929 )
Burnet v. Wells , 53 S. Ct. 761 ( 1933 )
Gregory v. Helvering , 55 S. Ct. 266 ( 1935 )