Decisions. Weyerhaeuser Timber Company. In matter of Weyerhaeuser Timber Company and International Association of Machinists, Lodge No. 1473, affiliated with American Federation of Labor; in matter of Weyerhaeuser Timber Company, Klamath Falls Branch, and Brotherhood of Locomotive Firemen and Enginemen; in matter of [same] and Brotherhood of Railroad Trainmen, cases nos. R-2303 to R-2305; certification of representatives, May 13, 1941.