Who's Who in Oz is a guidebook to the characters in the classic Oz novels. It was written by Jack Snow, and published by Reilly & Lee in 1954. A reprint of the original edition was issued by Peter Bedrick Books in 1988. Snow's guide includes characters from all of the "Famous Forty" books except the last, Eloise Jarvis McGraw's Merry Go Round in Oz (1963), which had not yet been published when Snow wrote. His Who's Who contains capsule biographies of 630 Oz characters: