Nos. 19452, 19515. Argued January 10, 1966. Decided June 27, 1966. Mr. Joel Field, New York City, of the bar of the Court of Appeals of New York, pro hac vice, by special leave of court, with whom Mr. Jacob Sheinkman, New York City, was on the brief, for petitioner in No. 19452. Mr. Warren M. Davison, Atty., N.L.R.B., with whom Messrs. Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Associate Gen. Counsel, and Marcel Mallet-Prevost, Asst. Gen. Counsel, were on the brief, for petitioner in No. 19515