Howard v. Commissioner of Internal Revenue , 29 F.2d 895 ( 1928 )
Zellerbach Paper Co. v. Helvering , 55 S. Ct. 127 ( 1934 )
Lucas v. Pilliod Lumber Co. , 50 S. Ct. 297 ( 1930 )
Florsheim Brothers Drygoods Co. v. United States , 50 S. Ct. 215 ( 1930 )