I've always loved creating fake advertisements...
In this example, I picked the Fleetwings company, which specialized in building steel aircraft (here the Air Force's BT-12 Sophomore), and imagined that Superman, the "Man of Steel" might have been used as a means of promoting the company.
Step #1: The basic ad (source 1) remains but I've moved the aircraft and clouds to the right so as to leave more space for Supes.
Step #2: I took the Superman from the classic #2 cover and inserted it, then modified its colors so it fit with the rest of the ad.
Step #3: The catchphrases from another period advert (a steel company that supplied Fleetwings) are modified and inserted in the ad in the form of comic-like balloons.
Step #4: The final paragraph of the original text is changed to match the "Man of Steel" theme. I had to reuse bits and pieces from the rest of the text so that the font looked the same.
Step #5: A mention of Superman and DC Comics is inserted in a corner of the ad because I guess even in 1942 they wouldn't have used such a character without an authorization and due crediting of the source and copyright.
Hope you like it!
© Stéphane Beaumort / BIS Productions / AviaDesign 2012