United States v. Chicago Professional Schools, Inc. , 290 F.2d 285 ( 1961 )
United States Ex Rel. Quinn v. Hunter , 162 F.2d 644 ( 1947 )
United States v. Smith , 331 U.S. 469 ( 1947 )
United States v. Robinson , 80 S. Ct. 282 ( 1960 )