Curious about what is hidden in invisible ink? So is Curious George. Help him discover the hidden world. The Special Pen reveals the invisibly printed pictures. Then match your stickers to the appropriate spot. Each book includes 24 pages of fun, a special pen and stickers.
— Kim Haynes, co-owner of Lollipop Toy Store in Dawsonville, Ga., told TDmonthly in spring 2009 that her store sells about $300 a month of the Magic Pen books, “if I can keep it in stock.”
— Four of 64 retailers named products from Lee Publications when discussing best-selling travel toys in March 2009.