Hi there, About 25-30 years ago I used to get given by my parents what we kids called 'Yes/No books', which generally appeared on rainy days during our camping holidays. This series of books contained puzzles of various types, with answers or solutions in invisible ink. Using the magic pen provided we would select our answers and see whether we were correct... I have no idea what they were called or who made them, and haven't seen anything like them in years. Have you? Thanks! Julie
I love these books too!! My mom got me hooked over 25 years ago (about) I am 37 years old and I still love these books. They are great for road trips. A local toy store used to carry them but they went out of business. Now i have to order them online. They average about $3.50 each. well worth it! my kids are now hooked!
Posted by: Bobbie | March 13, 2009 at 02:47 PM