We have quite a few libraries included in our therapy dog group's route. We have a rottie that does very well with the kids' groups. See the web link for pictures of him at the library.
www.teamvasko.com go to pictures and therapy dog (I have not met these folks. I believe they go on different days and locations then I do, but we all are part of the same email tree, but they forwarded us the pics, and the link so thought I would pass it on as well.)