United States v. Covington , 89 S. Ct. 1559 ( 1969 )
Stromberg v. California , 51 S. Ct. 532 ( 1931 )
Efrain Santos v. United States , 417 F.2d 340 ( 1969 )
Marchetti v. United States , 88 S. Ct. 697 ( 1968 )