Thnx for the collection Gorbatchov, its great to have.
By the way, the third poster down (two sad young girls) is South Korean, if I'm not mistaken, protesting at some action possibly by one of the military dictators that controlled South Korea for years.
For those that may want to look further in East Asia, you can find some collected posters here: http://chineseposters.net/gallery/
that collection also contains some non-communist art work from the warlord era and the Guo Min Dang (Republican- Chiang Kai Shek) era. There's a good place to start an understanding of wht was happening, in this web-site.
However, we categorise this images, we should remember the function and the target audience.
In the case of China, the different administrations wanted to convey different messages to a mass audience that was itself quite unsophisticated (naive). Illiteracy was widespread, and simple (and positive) images could convey more than the proverbial 1000 words. The WTS has also aimed at less sophisticated people, the am haratetz. I guess that may explain the similarity.
Artwork of one kind or another bombard our minds every day. Some commercial images are now very sophisticated, targeting emotions far different to the intellectual level. Political propaganda has also changed.
The WTS styles also changed over the years. Compare the simplicity (a neccessary simplicity because of the technology then available) of the WT illustrations etc in Russel's day.
Now jump to Joe Rutherford's books. I'm thinking of Riches, Vindication I and II and Light (I think 3 volumes) maybe we can still call it 'naive' but I suggest both the style and the content picks up the 'spirit' of the 1920s and 1930s.
If someone has those books and can scan the illustrations, I think we'd all find them interesting to compare with the later images in Gorbatchov's posts (I chucked mine out years ago, and now (grin) regret I've lost a lot of content that's interesting from a sociological perspective.