Kindly donated by Adam Gascoigne at SportsFrame.
A typed letter personally signed by Donald Campbell dated 31st August 1956 thanking one of his sponsors for their help in Breaking the world water speed record. Campbell set seven world water speed records in K7 between July 1955 and December 1964. The letter has been framed to conservation standards and features the K7 Logo and the now iconic famous Bluebird colour.
