Trying to find Blue prints, factory construction workshop drawings with measurement details what ever the correct term is, of the Cruiser A13 MkIV, Covenanter and Crusader tank. Did try Bovington but they are very limited and not much help. Would Kew public records office or Duxford be a good place. Someone must have them but who. I was thinking of trying to contact P.M.Knight who wrote the latest series of tank books to see if he ever came across such drawings. Cant be that hard to find them, unless they were trashed when they stopped production.