I came across this article recently and had to share: A Brief History of Book Vending Machines.
Sidenote: I want to visit Japan for many reasons, but a huge part of that is the vending machines. The Japanese put crazy stuff in their vending machines. (And those aren't even some of the weirder ones I've heard of, which include steak, porn, and used panties. Yes, you read that right. I have no idea if it's true or just a gross rumor.)