Authors Alois Sitek and Vernon Blunt     Published in 1940    Published by Allianz Press, London

Author Bill Scull      Published in 1977       Published by Pelham Publishing, London

Author Edward Hull   Published in 2000    Published by Woodfield Publishing, Bognor Regis

Author Ann Welch    Published 1986    Published by A&C Black, London For copyright reasons, only a sample of this book is available