I remember checking those out from my library. But I don't remember much about the books themselves, other than that many of them were actually renamed from the episodes (at least, I think the episodes came first, didn't they?). For example, "Misfortune Teller" became Arthur and the Cootie Catcher, and "The Boy Who Cried Comet" was Arthur and the Comet Crisis.
Some of the books weren't even episodes...like Arthur and the Goalie Ghost, which, strangely, incorporated a lot of seemingly randomly placed French phrases and someone named Jacques Nettoyer.