Roger Gabriel ; with a foreword by M. D. Milne. R. W. G. Hunt ; with a foreword by W. D. Wright. by Ethel Browning ; with a foreword by W. V. Mayneord. Edward Sagarin ; with a foreword by Marvin E. Wolfgang. R. A. B. Rorie ; with a foreword by G. F. Abercrombie. Robert J. McEliece ; with a foreword by Mark Kac. J. S. Rogers ; with a foreword by T. H. Laby. W.R. Smyser ; with a foreword by Paul Nitze. Egbert Torenbeek ; with a foreword by H. Wittenberg. Peter Meinhardt ; with a foreword by James Mould.