Investigation of Railroads, Holding Companies, Affiliated Companies and Related Matters Hearings Before a Subcommittee of the Committee on Interstate Commerce, United States Senate, Seventy-fourth Congress, Second Session[-Seventy-fifth Congress, Third Session] Pursuant to S. Res. 71 (74th Congress), Authorizing an Investigation of Interstate Railroads and Affiliates with Respect to Financing, Reorganizations, Mergers, and Certain Other Matters