Good original 1956 Chevrolet Truck Dealer Service Manual Supplement. This Manual covers the full line of Trucks for 1956. It is meant to be used with the 1955 Service Manual. These have Information, Illustrations, Diagrams, Specifications and Procedures. These are what the Dealership used to repair your Truck.  Very informative and useful tool that is hard to find since they were not available to the public.