This is a reprint of the confidential manual written by Chevrolet Engineering staff to train salespeople on the features of the new models. This book describes mechanical and styling improvements of vehicles by explaining in detail how vehicles changed from the previous year. It includes a 6 page chart comparing '40 and '39 specifications side by side. You'll see detailed descriptions of each body style, along with explanations of how they differ from one another, as well has how Master Deluxe models differ from Master 85 models. Three pages have written descriptions of accessories. You will find detailed interior/exterior photos, mechanical drawings, and specifications. Some of the information in this book can't be found anywhere else. Buy now for this hard to find book.