Commissioner v. P. G. Lake, Inc. , 78 S. Ct. 691 ( 1958 )
Whipple v. Commissioner , 83 S. Ct. 1168 ( 1963 )
Helvering v. F. & R. Lazarus & Co. , 60 S. Ct. 209 ( 1939 )
Commissioner v. Southwest Exploration Co. , 76 S. Ct. 395 ( 1956 )
Commissioner v. Duberstein , 80 S. Ct. 1190 ( 1960 )