Elf Sternberg

While this is clearly Soviet - I've seen the seminal poster the guy is thinking of, even ^_^ - this style, generically, was popular throughout the Western world in the 20s and 30s. The Soviets stayed with it much longer than everyone else - hell, if you look at late Soviet architecture, as in, stuff built in the 80s, you'll still see Deco styling, in an only mildly evolved form. It's amazing how much got shut down in the Soviet era - in some ways, it was profoundly conservative, at least in the sense of "unchanging."