The first week of August is National Clown week. The Libraries ran a post last year on this blog about harlequinades, which are featured in its current exhibition, Paper Engineering: Fold, Pull, Pop & Turn.
The first movable books for children, developed in England in the 1700s, were harlequinades (stories featuring the comic character Harlequin). Designed to teach a moral, the tale unfolds as a series of flaps are opened.