Knetsch v. United States , 81 S. Ct. 132 ( 1960 )
Glass v. Commissioner , 87 T.C. 1087 ( 1986 )
Gregory v. Helvering , 55 S. Ct. 266 ( 1935 )
Helvering v. National Grocery Co. , 58 S. Ct. 932 ( 1938 )
Commissioner v. Duberstein , 80 S. Ct. 1190 ( 1960 )
Miller v. Commissioner , 84 T.C. 827 ( 1985 )