Apologies in advance for this nonsense but I have reached my limit. There is a thread here somewhere from either early this year or late last year where people discussed some small books available on amazon.jp I think. The two books I was interested in were full of vintage artwork. One was horror related and another was science fiction if I remember correctly. I don't think any of it was american at all. Looked Japanese but I am not 100% sure. They looked like half size books. Maybe Manga sized. I have literally spent months on and off looking for that thread in the hopes of avoiding having to clutter the forum and ask for help but I haven't had any luck at all. I saved the links that were in that post but that computer died and I lost everything on it. If anyone remembers what thread that was in I would greatly appreciate the help
Illustrations of the Strange, Mysterious, and Bizarre for Kids of the Showa Era - Our Unknown Worlds of the 1960s-70s Futuristic Illustrations for Kids of the Showa Era - Our 21st Century
ok, that was pretty entrancing. Sorry if I'm intruding, but the publisher has a web page in English as well: http://seigensha.com/en/ It seems to have some good stuff in addition to your search.
Thanks for the link. A couple of those little animation flip books looked really neat so I grabbed them off amazon. One with with free shipping and the other was like 4 bucks shipping instead of the 20 something bucks the other site wanted. God of Bug Eater and a ghost book.