I received these from a friend of mine who had them when he was training to be an A&P.
http://tinyurl.com/3qzrnj7 (Picasa Web Album)
Examples:
(http://tinyurl.com/3eb4r9n)
(http://tinyurl.com/3b7bshe)
There's 38 photos in all, a combination of glossy photos and standard paper printing. The photos all have Boeing stamps on them.
No idea the actual source, but circa late sixties.
The first person who is willing to Paypal me the postage can have the whole set.
If nothing else, looking up the tail numbers killed some time, found at least one in private hands.
The vintage 737s with the 'cigarette' engines on them are quite a blast back in time. Who'd have ever figured that platform would outlast most of the rest of what Boeing made, and still be going with no end in sight.