In Court of Appeals of D.C.; no. 4987, Intercity Radio Telegraph Company, appellant v. Federal Radio Commission; no. 4988, Wireless Telegraph & Communications Company, appellant v. Federal Radio Commission; no. 4990, R.C.A. Communications, Inc., appellant v. Federal Radio Commission; no. 4991, Mackay Radio & Telegraph Company, appellant v. Federal Radio Commission : Statement of facts and grounds for decisions of Federal Radio Commission. ([s.n],, 1930)