Two-page humorous aboard ship shenanigans.
Found on the back cover. Illustrated in red, black and white. Ad for fictional Bubble-Nut Sparemint Gum, which costs only 5 green stamps, which is also good for blow out patches and bicycle tires, and comes in assorted flavors: charcoal grey, plaid green, people purple and sickly blue. Not signed but text on one book spine shown on cover reads "What happened to my braces? by Wendy Everett."