Court of Appeals for the D.C. Circuit September 1957 casesHelms v. DuckworthLevy v. HaywardBriscoe v. United StatesRuth Elkhorn Coals v. MitchellSpevack v. StraussHarrison v. HarrisonWrather-Alvarez v. Fed. CommunBradley v. United StatesUnited States v. SeatonSchlesinger v. GatesBendix Aviation Corp. v. Smiths America Corp.Wynn v. United StatesLeedom v. Kyne