Nos. 18839, 18877. Argued January 26, 1965. Decided February 18, 1965. Mr. James Graham, New York City, of the bar of the Court of Appeals of New York, pro hac vice, by special leave of court, for petitioner in No. 18,839. Mr. Jacob Sheinkman, New York City, was on the brief for petitioner in No. 18,839. Mr. Richard P. Lawlor, Atty., N.L.R.B., of the bar of the Court of Appeals of New York, pro hac vice, by special leave of court, with whom Messrs. Arnold Ordman, Gen. Counsel, Dominick L. Manoli