Recently I found a copy of the book Sesame Street Treasury at the store. I didn't buy it, but looked through it. It's basically a 40th anniversary collection of various Sesame Street books over the years. One of the stories included is How to Be a Grouch. I had read at the Harvey Kneeslapper page on Muppet Wiki that this was among the characters book appearances. I looked throughout the book, but didn't see him anywhere. So, was this a contributor mistake at Muppet Wiki, or did I just not look hard enough (there weren't many scenes with crowds of characters, and the biggest crowd scene appears to be a drawing of a line of characters), or might the Sesame Street Treasury have just altered the arwork/left part of the book out (I don't remember reading this book as a child, and also just looked at the Treasury in the store)?