Hi, Funny that you ask. Stan Smith, 111 Linden Hall Road, Boalsburg, PA 16827. (814) 466-6087, stan@meyersmith.com has just published a book on duPont automobiles. The Eight Cylinder duPont. 115 pages. ISBN 978-0-615-25419-7. I believe that the first printing is sold out, but I know that he plans to issue a new edition with added photos. His folks owned a 1929 Speedster, #G-905. The car still exists. I have a photo of the car taken at my place in 1963.