Ever wondered how pop-up books got to be so darn popular? (No pun intended.) Well, you can thank Waldo "Wally" Hunt, a former ad man who basically created the U.S. pop-up book market after discovering a Czechoslovakian children's pop-up book in a toy shop window. Hunt passed away earlier this month, leaving behind an incredible legacy that changed not just the publishing industry, but also advertising (he created pop-up magazine ads for Wrigley), animation (Disney was among his publishing firm's many clients) and greeting cards (Hallmark bought his first pop-up book company). Here's to you, Mr. Hunt. 


Here are 10 amazing pop-up books in honor of him.