U.S. Supreme Court April 1943 casesCreek Nation v. United StatesHelvering v. Stock Yards Co.Aguilar v. Standard Oil Co.N.Y. ex Rel. Whitman v. WilsonHelvering v. SprouseU.S. v. Radio Corp. of AmericaFidelity Assurance Assn. v. SimsDe Zon v. American President Lines, Ltd.Board of Comm'rs v. SeberUnited States v. LepowitchFisher Co. v. Witmark SonsMyers v. MatleyEx Parte PeruIllinois Comm'n v. Thomson