West Texas Refining & D. Co. v. Commissioner of Int. Rev. , 68 F.2d 77 ( 1933 )
Weicker v. Howbert , 103 F.2d 105 ( 1939 )
Morgan v. Helvering , 117 F.2d 334 ( 1941 )
Case v. Commissioner of Internal Revenue , 103 F.2d 283 ( 1939 )
Commissioner of Int. Rev. v. Schumacher Wall Bd. Corp. , 93 F.2d 79 ( 1937 )