The Media Upper Providence Libary is great place to find best sellers and new releases. Problem is, the space is very small and many, many of the books in the adult section are very outdated. If you are looking for a vacation guide to costa rica from 2001, you could probably find it here.
The Children's section is a highlight. The small, cozy children's area is loaded to the gills with books and they always seem to have what we are looking for, eventually. Year round there are great programs for little kids, but not very many for the 8-12 age group, which is disappointing.