by Charles G. Davis ; illustrated by the author. by Charles R. Knight ; with illustrations by the author. George Gamow ; illustrated by the author Philippe Petit, illustrated by the author. by Charles Ghigna ; illustrated by Julia Woolf. by Charles M. Schulz; illustrated by Robert Pope. by Charles Ghigna ; illustrated by Jon Goodell. by Charles M. Schulz; illustrated by Scott Jeralds. by Nicholas Bate; original illustrations by the author. by Charles Ghigna ; illustrated by Kenneth Spengler.