Prior to
1965, the new owner only got a loose leaf notebook with all the manuals supplied by the appliance manufacturers. You might try the Vintage Airstream Club site Archieve for more data on your early unit.
The Vintage Airstream Club. Later model owners manuals and service manuals frequently come up for sale on Ebay. They usually go for about $40. They are more durable than the photocopies you receive from some of the services. Someone should scan the ones they have into a computer and then make CD's and give them away. I do not know whether that would violate the copywrite laws, if you do not sell them for a profit. The copywrite law does allow you to make copies, of original materials you have paid, for your own personal use. Placing copywrited material available on line I do not think would be legal, unless you received permission from the orginal copywrite holder to do it.