AMER. TRUCKING A. v. U. S

Peter T. Beardsley, Richard R. Sigmon, Bryce Rea, Jr.,

Ralph C. Busser, Jr., for appellants in No. 510. Carl Helmetag, Jr., for appellant in No. 511. Solicitor General Marshall, Assistant Attorney General Turner, Lionel Kestenbaum

Robert W. Ginnane for the United States et al. John F. Donelan

John M. Cleary for National Industrial Traffic League, appellee in both

Joseph E. Keller

W. H. Borghesani, Jr., for South Paterson Trucking Co.,

, et al.

William A. Goichman

Joseph C. Bruno for Pennsylvania Public Utility Commission, appellees in No. 511.