National rail strike : hearing before the Subcommittee on Transportation and Hazardous Materials of the Committee on Energy and Commerce, House of Representatives, One Hundred Second Congress, first session, including H.J. Res. 222, a resolution to provide for a settlement of the railroad labor-management disputes between certain railroads represented by the National Carriers' Conference Committee of the National Railway Labor Conference and certain of their employees, April 17, 1991.