No. 258, Docket 27676. Argued March 11, 1963. Decided April 25, 1963. Melvin Pollack, Stuart Rothman, Gen. Counsel, Dominick L. Manoli, Assoc. Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, Gary Green, Atty., N.L.R.B., Washington, D.C., for petitioner. Sidney A. Coven, Joseph Lepie, Boston, Mass., for respondent. Benjamin Wyle, New York City and Warren Woods, Washington, D.C., submitted brief as attorneys for amicus curiae, United Paper-makers and Paperworkers, AFL-CIO. Before MOORE, FRIENDLY