I was watching The Antiques Roadshow last night and a TWA poster by David Klein was featured. It inspired me to look Mr Klein up and research more of his work. He was very prolific on the 50s and 60s and worked at TWA as one of their in-house designers. I thought you might enjoy them too - I think all you mid-century design junkies will be drooling over these - this California one would look amazing framed on some retro wood paneling walls.
These aren't the best images - looks like they are photographs rather than scans