Court of Appeals for the D.C. Circuit September 1949 casesAmerican Airlines, Inc. v. UlenSimpson Bros. v. District of ColumbiaHawkins v. FradkinOwen v. SchwartzSmith v. KingslandCitizens' Protective League v. ClarkUnited Cigar-Whelan Stores Corp. v. D.CCradle v. United StatesPan American-Grace Airways v. Civil Aeron. Bd.Radio Cincinnati v. Fed. Communications Com'nNorris Hirshberg v. Sec. Exchange Comm