Railroads. Investigation of railroads, holding companies, and affiliated companies. hearings before subcommittee, 75th Congress, 2d session, pursuant to S. Res. 71 (74th Congress), authorizing investigation of interstate railroads and affiliates with respect to financing, reorganizations, mergers, and certain other matters: Chicago & North Western Railway Co. and Chicago, St. Paul, Minneapolis & Omaha Railway Co., Alleghany Corporation, and Chesapeake Corporation.