The only other reference book that I can think of is "The Chevrolet Six Car and Truck" by Victor W. Page, M.E. Published by The Norman W,. Henley Publishing Co., 2 West 45th Street, New York. You will want to get the 1938 book. These are re-printed and available from AbeBooks.com. They also have some original copies, too. "A practical treatise written in simple language,explaining the functions and construction of all parts of Chevrolet six cars and trucks, with complete instructions for operation, maintenance and lubrication. Contains over three hundred specially made diagrams and authoritative photographs. This is the definitive book.