Yes, this is a kids book from SCHOLACTICS. I had gotten it from the kids' book orders, so it is suitable for kids. And yup, it's knock-knock jokes. My girls never read it...those lttle stinkers! LOL!
I was telling my 9 YO grandson about it today and he got pretty excited so I guess I will have to try to win it for him but will do it when it gets closer to auction end :) Thanks for the good books you have listed also.