Hi guys, My sister baught me a nice book for christmas Lost Voices of the RAF but tucked inside it waswhat we call a stocking filler a small bookcalled Pilots notes Hurricane IIa,IIb,IIc,IId,andIV , Merlin XX engine. Its a copy of the offical book issued to pilots and you can get one for all the spitfire marks and just about every RAF plane from WW2. its facinating reading. Their available from Waterstones. anyone come across these before.