[New York]: Duenewald Printing Co., 1949. First Edition, Thus. Spiral-bound color pictorial boards. HISTORICAL SIGNIFICANCEJulian Wehr (1898–1970) was heralded as the 'American Master of Animated Books'. Unlike traditional pop-ups that deploy upon opening a page, Wehr's patented 'animation' system allowed the reader to manipulate the characters' movements via a single.....