Report no. 67 to the President by Emergency Board, created Jan. 24, 1949 by Executive order 10029, pursuant to sec. 10 of Railway labor act as amended, to investigate unadjusted dispute between Northwest Airlines, Inc. and certain of its employees represented by International Association of Machinists, labor organization (NMB case A-2913), Casper, Wyo., Mar. 19, 1949.