
    No. 74.
    American Trucking Associations, Inc., et al. v. United States et al.
    
      Peter T. Beardsley for appellants. Robert W. Ginnane for the Interstate Commerce Commission, Edward M- Reidy, William Meinhold and Robert L. Pierce for Pacific Motor Trucking Co., and Henry M. Hogan., Walter R. Frizzell and Beverley S. Simms for General Motors Corp., appellees.
   Appeal from the United States District Court for the District of Columbia. Probable jurisdiction noted.  