These older service bulletins were printed and mailed out to all the dealers throughout the year. The dealers kept hard-bound books of them on their shelves. Doubt any of them in this time frame exist electronically. Best bet is to check ebay to see if someone is selling a set(s) of these books that they may have purchased from an old dealership. A lot of dealerships don't work on stuff this old anymore-maybe they'd sell them?
