I ran across the same thing on my car in Texas,only went back to 1974 and that was the guy I bought it from.I even offered to pay them if they would do some research into the storage boxes.The guy flat told me no that that was not a nice place to go where they have the records stored.I even offered to do the search and still pay! No dice couldn't even come close! So some of us will probably never know!But as long as you enjoy your car that is what counts to me.I don't have to worry about making any money on my cars because I will keep them till I am gone.Then my Wife,Daughter and Soninlaw can deal with them.At least my Soninlaw is intelligent and knows a lot about old cars,he also knows what I have tied up in them,hell he probably knows more about them than I do.Good to have someone like him taking care of my Babies!Sometimes I think he does a better job than I do.
Bobby Dodson