"The Jolly Jump-Ups on the Farm," 1940

Geraldine Clyne and her husband created the Jolly Jump-up series of pop-up books from the late 1930s into the 1950s. Their illustrations -- printed, die-cut, and folded from a single paper sheet -- created a 3-dimensional image when readers opened the book. Clyne's stories followed the adventures of the Jump-Up family, like this one about the children's idyllic summer on the farm.