Visitors from Oz: The Wild Adventures of Dorothy, the Scarecrow, and the Tin Woodman is an unofficial sequel to the Oz book series. Published in 1998, it was written by Martin Gardner and illustrated by Ted Enik. It follows up after the last Oz book written by L. Frank Baum.
Martin Gardner (1914–2010) was an American mathematics and science writer specializing in recreational mathematics, but with interests encompassing micromagic, stage magic, literature (especially the writings of Lewis Carroll and G.K. Chesterton), philosophy, scientific skepticism, and religion. He wrote the Mathematical Games column in Scientific American from 1956 to 1981 and the Notes of a Fringe-Watcher column in
Skeptical Inquirer from 1983 to 2002 and published over 100 books.