H.J. Heinz Co. v. Labor Board

In H.J. Heinz Co. v. N.L.R.B., 311 U.S. 514, 61 S.Ct. 320, 85 L.Ed. 309 and Cox v. Gatliff Coal Co., D.C., 59 F. Supp. 882, affirmed 6 Cir., 152 F.2d 52, it was stated that the Act contemplated that a collective bargaining agreement be in writing.