Original 1944 Mack Truck Numerical Parts and Price List. This Parts Book was used by the U.S. Military to get pricing on Factory Replacement Parts for the Military Issue Mack truck Models from this period. It has Parts Numbers, Group Numbers and Pricing for these Parts. This is a Parts Price Book only, it does NOT have Part Descriptions or Illustrations. This very rare Mack Truck and Military Book is in good condition for its age with minor wear, blemishing and soiling [see photos]. Parts List #1445, dated June 1944.