The original preliminary painting for the wraparound cover design of the first UK edition of Roald Dahl’s second adventure featuring Willy Wonka, Charlie and family. Pen, watercolour and gouache on card. Measuring 25 x 35cms. Annotated and signed by the artist on verso “Elevator should be about 1/2’’ higher. F. J.” In excellent bright condition, folded and partially split along the spine panel in production.