Nos. 19703, 19720. Argued March 16, 1966. Decided June 28, 1966. Mr. David R. Richards, Dallas, Tex., with whom Messrs. L.N.D. Wells, Jr., Dallas, Tex., and Herbert S. Thatcher, Washington, D.C., were on the brief, for petitioner in No. 19,703. Mrs. Janet Kohn, Atty., N.L.R.B., with whom Messrs. Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Associate Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, and Mrs. Nancy M. Sherman, Atty., N.L.R.B., were on the brief, for respondent in No. 19