Ralph A. Burns ; with special contributions by John W. Hill. Ralph A. Burns ; with special contributions by Hohn W. Hill. John W. Hill ; with special contributions by Cynthia S. Hill. [by] R.F. Ansdale, with a special contribution by D.J. Lockley. John A. Walker ; with a contribution by Judy Attfield. by Donald E. Breyer, with contributions by John A. Ank. Robert H. Frank, Ben S. Bernanke with special contribution by Louis D. Johnston. Robert H. Frank, Ben S. Bernanke ; with special contribution by Louis D. Johnston. James A. Anderson ; with contributions by Tom Head. Robert J. Sternberg ; with contributions by Josephine F. Wilson.