by Henry H. Walsh, with illustrations by the author .. George Gamow ; illustrations by the author. by Darlene K. Racker ; with illustrations by Hidejiro Yokoo. John D. Roberts ; illustrated by the author. Richard Headstrom ; illustrated by the author. R. Chudley ; illustrated by the author. by Johanna Spyri; with illustrations by Gustaf Tenggren. Barry J. Wadsworth ; with drawings by the author. by Amram Scheinfeld ... Illustrated by the author. David Norman ; with illustrations by John Sibbick.