The Phantom Tollbooth is a children's fantasy adventure novel written by Norton Juster, with illustrations by Jules Feiffer, first published in 1961. The story follows a bored young boy named Milo who unexpectedly receives a magic tollbooth that transports him to the once prosperous, but now troubled, Kingdom of Wisdom. Along with a dog named Tock and the Humbug, Milo goes on a quest to the Castle in the Air seeking the kingdom's two exiled princesses, named Rhyme and Reason. As Milo learns valuable lessons, he finds a love of learning in a story full of puns and wordplay, such as exploring the literal meanings of idioms.

Jules Ralph Feiffer is an American cartoonist and author, who at one time was considered the most widely read satirist in the country. He won the Pulitzer Prize in 1986 for editorial cartooning, and in 2004 he was inducted into the Comic Book Hall of Fame. He wrote the animated short Munro, which won an Academy Award for Best Animated Short Film in 1961. The Library of Congress has recognized his "remarkable legacy", from 1946 to the present, as a cartoonist, playwright, screenwriter, adult and children's book author, illustrator, and art instructor.