Came across a blog showing and discussing propaganda posters from China, from the 40s to the 70s. The paragraphs in between discuss in very superficial detail the differences between the "reality" shown in the posters, and what people may have been experiencing at the time in China. It's definitely picture-heavy instead of analysis heavy, but I did come across it via a photography resource site. This is part one of a series (not sure if it's 2 parts, or more, part 2 isn't out yet), if/when I see the next installment, I'll put it up here.
I kinda want the 2nd poster on the page, and the space program one.