Five Bentley reference books, comprising Michael Hay: The Vintage Years 1919-1931, (2nd edition); Clare Hay: The Vintage Years in (three volumes), Clare Hay: Chassis 141, The Story of the First Le Mans Bentley; W.O. Bentley: Illustrated History of the Bentley Car; and The Technical Facts of the Vintage Bentley, 1956 published by the Bentley Drivers Club.
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