Cohan v. Commissioner of Internal Revenue , 39 F.2d 540 ( 1930 )
Paul v. Weir and Margaret G. Weir v. Commissioner of Internal Revenue, Paul v. Weir v. Commissioner of Internal Revenue , 283 F.2d 675 ( 1960 )
Clark v. United States , 211 F.2d 100 ( 1954 )