Scarce first edition of this avant-garde German picture book, incorporating new concepts in child psychology which Seidmann learned in part from her uncle, Sigmund Freud.

First edition of this avant-garde activity and moveable book, "influenced by the discoveries of child-psychology which assign an active role to the child even when he is looking at pictures" (Hürlimann).

Very scarce first English language edition of DAS ZAUERBOOT, "influenced by the discoveries of child-psychology which assign an active role to the child even when he is looking at pictures" (Hürlimann).