
    No. 222.
    No. 223.
    No. 224.
    No. 225.
    Civil Aeronautics Board v. Summerfield, Postmaster General, et al.; Delta Air Lines, Inc. v. Summerfield, Postmaster General, et al.; Civil Aeronautics Board v. Summerfield, Postmaster General, et al.; and Western Air Lines, Inc. v. Civil Aeronautics Board et al.
    
      Emory T. Nunneley, Jr. and 0. D. Ozment for the Civil Aeronautics Board. L. Welch Pogue for Delta Air Lines, Inc. Hugh W. Darling and D. P. Renda for Western Air Lines, Inc. Acting Solicitor General Stern filed memorandums stating that the United States and the Postmaster General do not oppose the petitions. Hubert A. Schneider for Braniff Airlines, Inc., C. Edward Leasure for Northwest Airlines, Inc., and Gerald B. Brophy for Trans World Airlines, Inc. filed a brief, as amici curiae, supporting the petition in No. 222.
   United States Court of Appeals for the District of Columbia Circuit. Certiorari granted.

Reported below: 92 U. S. App. D. C. 248, 256, 207 F. 2d 200, 207.  