Before the Interstate Commerce Commission, no. 12964 : consolidation of railroads : in the matter of application of the Baltimore and Ohio Railroad Company, the Chesapeake and Ohio Railway Company, the New York Central Railroad Company and the Pennsylvania Railroad Company to reopen the subject and to change and modify in certain respects the plan adopted and published herein under date of December 9, 1929, for consolidation of the railway properties of the continental United States into a limited number of systems : brief on behalf of the Baltimore and Ohio Railroad Company, the Chesapeake and Ohio Railway Company and the Pennsylvania Railroad Company.