Cohan v. Commissioner of Internal Revenue , 39 F.2d 540 ( 1930 )
Louis H. Diamond, Madelene Diamond v. Commissioner of Internal Revenue , 930 F.2d 372 ( 1991 )
United States v. Boyle , 105 S. Ct. 687 ( 1985 )
Snow v. Commissioner , 94 S. Ct. 1876 ( 1974 )
Zenith Radio Corp. v. Hazeltine Research, Inc. , 91 S. Ct. 795 ( 1971 )
Commissioner v. Groetzinger , 107 S. Ct. 980 ( 1987 )
Marprowear Profit-Sharing Trust v. Commissioner , 74 T.C. 1086 ( 1980 )