You may find the following three books helpful in your research: VULCAN Photo Album by Alan Todd ( a Control Column publication printed by Brayford Press Ltd., 56 Coulson Road , Lincoln); The Vulcan B Mk 2 from a Different Angle by Craig Bulman (published by Pentland Books); and VULCAN Last of the V-Bombers by Duncan Cubitt with Ken Ellis (published by Osprey Aerospace).