Emergency Rail Services Legislation: Hearings Before the Committee on Interstate and Foreign Commerce ... and the Subcommittee on Transportation and Aeronautics, Ninety-first Congress, Second Session, on H.R. 18125, H.R. 18100, and H.R. 18179, Bills to Authorize the Secretary of Transportation to Guarantee Loans to Rail Carriers to Assist Them in the Performance of Transportation Services Necessary to the Maintenance of a National Transportation System, and for Other Purposes and H.R. 19953, a Bill to Authorize the Insterstate Commerce Commission to Provide Financial Addistance to Certain Railroads in Order to Preserve Essential Rail Services, and for Other Purposes, June 24, 25, 29, 30; July 7, 8, 21; and December 15, 1970, Bagian 2