Michael Yang from popupkingdom has a great new book just published about the history of pop-ups. The book features countless photographs of tunnel books, carousel books, theatre books, doll house books, and others. Michael has one the largest collections of pop-up books that I know of and is without doubt the pre-eminent expert on the genre. At the moment the book is only available in Chinese which makes it a problem for me to read! But at least I can enjoy the pictures!