From the Dr. Seuss Stationery and Accessories Collection. Dr. Seuss Pens. Perfect when used as party favors or classroom rewards, these colorful Dr. Seuss themed pens are a great way to introduce children to the wonderful world of Seuss! Includes six black ink ball point pens featuring various characters such as the Cat in the Hat, Thing 1 and Thing 2, One Fish Two Fish, Horton Hears a Who and Green Eggs and Ham. This product is officially licensed by Dr. Seuss Properties™ ©Dr. Seuss Enterprises, L.P. All Rights Reserved.