The propaganda from all over the world (and I mean "propaganda" neutrally) in WWII was fascinating, but, yes, agreed, the pro-manufacturing propaganda was especially prevalent in the US. This holds true to the old saying about how WWII was won (with British intelligence, Soviet lives, and American manufacturing), and of course the strong GDP data we have. You can find many graphs about this on the net; they look mostly like this:
IMO, this is what cemented the reputation of America's "Greatest Generation" - when faced with tough times (Great Depression==>WWII), Americans won by working, inventing, building, and manufacturing.
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