signed by thirty-one crew members and other persons involved in the raid who had, that day, received their awards at Buckingham Palace, including Wing Cdr. Guy Gibson VC, F/Sgt. Sumpter DFM, F. Officer Hobday DFC, B.N. Wallis (Designer of the Bouncing Bomb), P/Officer Sparfford DFC, Sgt. V. Nicholson DFM, F. Sgt. K.W. Brown CGM, Reg Pierson CBE (Chief Designer Vickers Armstrong - Aircraft Section), Eve Gibson (Guy Gibson's wife).