By Maddern, Eric, Duff, Leo
By Duff, Alan Robert
By Duff, Turney
By Duff, P. McL. D., Holmes, Arthur
By Hart-Davis, Duff
By Duff, Charles
By Duff, Gail
By Cooper, Duff
By Gertsen, A.I., Herzen, Alexander, Berlin, Sir Isaiah, Duff, J. D.
By Duff, Julie
By McDonald, Duff
By McKagan, Duff
By Maley, Alan, Duff
By Duff, Andrew
By Duff, Jeremy
By Hart-Davis, Duff, Strong, Colin
By Duff, Simon
By Hart-Davis, Duff, Soper, Eileen
By Duff, Kat
By Duff, Jim, Gormly, Peter
By Duff, Jeremy, Cherrett, Lisa