Thank you for sharing and the wonderful pics. Those books are amazing. Congrats Is there by chance any Spectreman one ?
Banso made more than 100 different pop up books from the late 60s to the late 70s, in 4-5 different sizes. Some of the topics were truly random, like one on cute pets. The reason those are interesting is sometimes the most random books (like one on volleyball!) contain some of the most spectacular pop ups. One of these days, given the time and everything else, I'd like to do a proper write up or video on the line. My guess is they had one or two key designers during the decade, and their brilliance is immediately recognizable in some of the constructions, especially in the larger books. Must be something with the early childhood education system or love of origami or something that raises the type of spatial geniuses that make items like the Banso pop ups, not to mention the Microman Microchange and Diaclone lines (later known as --> Transformers).
OK, I did my best to scan this picture song book I picked up. Not nearly as cool as the pop-ups earlier in this thread, but at least me posting here will let some folks see those for the first time! Put the images into a Flickr album so you can zoom in. My scanner is just document size so I had to use some panorama software to stitch the images together, and it's not always perfect. But turned out pretty good I think! My favorite is the spread with Jamila. He really gets clobbered! Album Link