Set of 12 ISSUES 1968 The Cadillac Serviceman Dealer Technical Service Bulletins plus Index Sheet. These were sent to Dealers to give Service Staff updated Model Information, Trouble-Shooting Tips and Repair Procedures on Cadillac Cars. These would have been used in conjunction with the Shop Manual to Service and Repair your Car. Very rare and informative pieces of Literature for the Cadillac Owner or Collector. They are in fair condition with some wear, blemishing and soiling [see photos]. Very rare and informative tool for the Cadillac Owner or Collector.