Original 1966-68 Chevrolet Truck Dealer Parts Catalog. This Parts Book covers Heavy Duty 21/2 & 3 Ton Series 70000 and 80000 Trucks. It is dated Effective October 1, 1967. It does have some coverage of earlier models. This is what the Dealer used to Order Factory Replacement Parts to Repair your Truck. Along with very useful Information and Data in the front, it has Part Numbers, Group Numbers, Description, Quantity, Application and Illustrations. It is a loose leaf Catalog with no Binder. It is in good condition with normal wear and blemishing from use in a Dealership [see photos]. Very rare and informative tool for the Chevy Truck Owner.