By Paul I. Wellman
By Krancke, Theodor & Brennecke, H. J.
By Nick Carter
By Milligan Spike
By Margot Arnold
By Cookson, Catherine.
By L. G. Horsefield
By Joe Millard
By Andre Norton
By Spike Milligan
By Balchin, Nigel
By John Noman
By Forsey, J. M.
By Kohler Smith, Valerie
By Thomas B. Costain
By Nansen, Fridtjof
By Georg Von Konrat
By Harry Baptist Smith
By Milligan, Spike