Invisible Ink Yes and Know Book 9 to 99

I loved these books when I was a kid during the 80s, I was so happy to find it at Amazon!!! I was surprised that after all these years I still had so much fun with this book! This product deserves high praising for being able to entertain both kids and adults. I highly recommend and will definitely buy more of these.

I got this as a gift for a grown up son. They are truly for any age and just plain ole simple fun.

Pen/ ink in pen worked! That's one thing you never know with invisible ink books but this one's pen was brand new. Would buy from them again!

And it didn't really hold the attention of a five year old either. I picked up a few different invisible ink books and this one was the first abandoned. I would not buy it again.

I remember these books from when I was a kid. Was surprised to see them again. I had fun doing the puzzles and games again.

Great gift for someone recovering from surgery . I bought this for something for my friend to do with his kids rather than play on the phone all day .

This was such a disappointment. I enjoyed these books so much as a kid and thought they would make great gifts but the quality of the paper is so poor that you can’t read the writing after uncovering it. I can’t possibly be any lighter with the pen and even in the most well-lit room it’s difficult to read.

Only complaint would be info shows up blurry sometimes.