This website provides scans of the Owners Manual that I acquired with my 1968 Airstream. 
Actually the manual says that it covers 1969 models, so it is either that I have the correct 
manual for the year (1969 models being built in 1968 etc), or a previous owner obtained
a 1969 manual, and found it to be 'close enough' to the 1968 model.
 
The 'original' document that I have may be a photocopy of an actual original. It is divided 
into 15 Chapters, and even at the lowest scan resolution, the complete manual takes up 57MB. 
So I have provided a link to each Chapter which is presented in one Searchable PDF file. If 
you have difficulty with these files, please email me at mharrison@iee.org. In the document 
which I scanned two blank sheets (four sides) follow the Index (presumably for notes) and there 
is a blank rear cover. If you print the manual, the front and rear covers should be on card 
stock, or heavier paper. Beacuse these three sheets are blank, I have not wasted file space 
on scanning them here; you can add them back easily.

Each page is 9 1/4" wide by 6" tall, and the document is printed double-sided. The 'original' 
has a plastic 'ring' spine and you can see the rectangular slots in the pages. I have included 
'unprinted' pages for ease of maintaining the duplex sequence when you print them off. 
As a first cut, I think you should be able to print the file on 8 1/2" by 11" paper set up for 
landscape printing and duplex. I'll leave it up to you whether to play around to find ways to 
print the original smaller size.

Good luck.

Mike