1949-54 GMC Dealer Master Parts Book. This Parts Catalog [Original Factory Reprint dated December 1957] covers the 1949-51 H Models 520 thru 970, 1952-54 620-36 thru DW 980-67 Trucks. It has Part Numbers, Group Numbers, Description, Quantity, Application and some Illustrations. This is what the Dealer used to order Factory Replacement Parts to Repair your Truck. It is in good condition with normal wear, blemishing and soiling from use in a Dealership [see photos]. Very rare and informative piece of History that will be a great tool for the GMC Owner or Collector.