11 Whimsical Facts About The Phantom Tollbooth
http://mentalfloss.com/article/63166/11-whimsical-facts-about-phantom-tollbooth
Whimsical facts about the book
Jules Feiffer Never Loved His Illustrations For ‘The Phantom Tollbooth'
http://www.huffingtonpost.com/2015/06/15/the-phantom-tollbooth-ill_n_7571442.html
An article about Jules Feiffer, the illustrator of the book
