Union Envelope Company. In matter of Union Envelope Company and Envelope Workers Union No. 393 and International Printing Pressmen and Assistants' Union of North America; in matter of [same] and Federal Labor Union No. 20795; in matter of [same] and International Association of Machinists, Lodge No. 10, cases nos. C-524 [to] C-526, decided Jan. 16, 1939; decision and order.