Car Fax will not give a history report on a vehicle that old. I tried with a 1968 Firebird that I have. They had to refund me my money because they said they didn't go back that far.
However, you might try going to the Dept. of Motor Vehicles in your area and paying for a title search. If there is a paper trail at all, they would have it. That's probably around $20 bucks.
