Bentley: Berthen (Darell) A Racing History of the Bentley, 1962 Autobooks edition; Bentley (W.O.) An Illustrated History of The Bentley Car, 1964, The Cars of My Life, 1961, W.O. - The Autobiography of W.O. Bentley, 1961; and Nagle (Elizabeth) The Other Bentley Boys, 1964 (5)