Cohan v. Commissioner of Internal Revenue , 39 F.2d 540 ( 1930 )
Frank J. Hradesky v. Commissioner of Internal Revenue , 540 F.2d 821 ( 1976 )
New Colonial Ice Co. v. Helvering , 54 S. Ct. 788 ( 1934 )
Earl M. Coplon and Mollie M. Coplon v. Commissioner of Internal Revenue , 277 F.2d 534 ( 1960 )
Welch v. Helvering , 54 S. Ct. 8 ( 1933 )
Commissioner v. Heininger , 64 S. Ct. 249 ( 1943 )