De arte natandi libri duo : quorum prior regulas ipsius artis, posterior vero praxin demonstrationemque continet
A 1587 London treatise on swimming by Everard Digby, printed by Thomas Dawson, written in Latin for students of the art. Its woodcut plates show a swimmer in a waterfall-lined river setting, repeated across panels that demonstrate successive stages of a stroke or submersion. A designer could draw on the stacked, repeated figure sequences and the dense parallel-hatched water as a model for showing motion through sequential frames.
