Original 1939 Plymouth Dealer Preliminary Parts List [dated November 25, 1938]. This Mopar Parts Book is what the Dealer used to order available Factory Replacement Parts to repair your Commercial Car Plymouth PT81 Model. The Preliminary Books were sent to Dealers to use until the regular editions were printed. It has an Alphabetical and Numerical Index, Part Numbers, Description, Quantity and Illustrations for the Replacement Parts for these PT81 Commercial Cars. It is in very good condition with minor wear, soiling and discoloration [see photos]. Very informative and rare piece for the Plymouth Commercial Car/Truck Owner or Collector.