Original 1937-38 International Trucks Dealer Parts Catalog. This IH Parts Book [MT-45] covers the D-186T and DS-186T [six-wheel] Models. This is what the Dealer used to order available Factory Replacement Parts to repair your Truck. It has Part Numbers, Description, Quantity and Illustrations for these Parts. It is in good condition for its age with some wear, soiling and blemishing [see photos]. Very rare and informative piece for the IH Truck Owner or Collector.