Thank you very much Bruce. So nothing to do with Pan Am itself.
Cheatline, which is also explained following your link to wiki, is also a word I was wondering why it's called cheatline. Why cheating ? The only planes I know cheating in the cheatline (hehe) were the DC4s faking rectangular windows to rival the DC7 optically.  :-?
I watched your video, great job ! Did you tour the world ?
take care, Lex