John A. Walker ; with a contribution by Judy Attfield. J. Drozd with a contribution by J. Nov鈇k. Josef Nov?ak ; with a contribution by Piet A. Leclercq. John W. Hill ; with special contributions by Cynthia S. Hill. Ralph A. Burns ; with special contributions by John W. Hill. John A. Walker, Judy Attfield David Spiller ; with an introduction by Brian Baumfield. Ralph A. Burns ; with special contributions by Hohn W. Hill. Barry Wilkinson, with a contribution by Rafic Makki. by Donald E. Breyer, with contributions by John A. Ank.