Stefan Landsberger has a collection of posters promoting the Chinese space program, which is relatively young. Which makes the visual style of these things all the more remarkable; for all China's capitalist transformation, fantastical social realism still rules the day. Gorgeous stuff, though, I wonder if you can buy these anywhere...
Stefan Landsberger's Chinese Propaganda Posters Page [iisg.nl via coudal]
Related, equally stunning, and admittedly, different: Let a hundred silkscreened Onesies bloom with this Cultural Revolution clip art, c1971 [flickr]