When I was a kid, I saw a picture of Lockheed's L500 concept for an airliner version of the C-5A Galaxy. It was a full double-deck plane with windows on both decks sans the wing box area. I have searched high and low and can not find this pic anywhere. Has anyone seen the pic I'm talking about? I've seen a few model kits of it, but they're poor quality. I'm pretty sure this pic was published by Lockheed.
I can only guess the reason they didn't manufacture it was that the whole L-1011/DC-10 debacle left them not wanting to go head to head with the 747 (again).
[Edited 2006-03-31 23:28:24]