Pop-up, activity children's books ((south) Central Park - Denver)

Update: Many of the history and science books were picked up, but there's a lot more. There are a lot of activity books - How to Draw, etc. There are also some incredible pop-up books. Many nonfiction children's books, mostly from the 1990s and 2000s, some older. All sorts of subjects. Includes some activity books that have some writing in them. Do you know a school or an after-school program whose students might enjoy some free books? These are mostly elementary / middle school.