Edited by A. O. Schaefer. edited by A. Scaife. edited by A. V. Slack. edited by M. J. Schick. edited by W. O. Skeat. edited by A. Z. Szeri. edited by A. F. Posnette. edited by A. Paul Schaap. edited by B. O. Seraphin. edited by A. H. Rose.