I'm sure others have posted stuff from airchive.com, such as
this thread from a few years back. But I found this site only today.
I was really struck by
this photo , showing amongn other things, a coach class lounge, onboard -- on a DC-8!
Cool stuff, more here:
http://www.airchive.com/SITE%20PAGES/MEM-UNITED.html
-C