Greetings HappyCamp 100!
Welcome to the world of 1964
The factory has reproduction of the original manuals available through the Airstream store. The Ambassador isn't listed, but the Sovereign
is -- the two owner's manuals would be identical except for the page showing the two primary floorplans. They may even have the Ambassador available, but just not listed on the web site. You can find the manuals at the link below:
The owner's manuals for 1964
were rudimentary compared to what we expect today. Prior to 1964
, there wasn't a printed owner's manual. Prior to 1964, the owner received a manilla envelope with individual literature for each of the installed accessories -- in fact, this practice continues.
You can also find PDF files of many of these individual accessory brochures/manuals at the link below:
The Vintage Airstream Club
Good luck with your Ambassadors -- the 1964s are fun coaches -- and it was also the last year for the door-within-a-door as well as the jalousie windows beside the entrance door.