Looking for ideas for books for Dylan to read. He is going into 2nd but reads 3rd grade level. And is devouring our library's supply. They rearranged their shelves and cleaned out a TON of books. With summer here, the shelves have been especially empty. Even so he has read pretty much all the Magic School Bus, Cam Jansen, Judy Moody and Stink books, Junie B. Jones, working on Nancy Drew, some Clementine, Ivy and Bean, Nate the Great, still working on Magic Tree house books, and many more fiction and nonfiction books and comics. I won't let him read Diary of a Wimpy Kid yet although he does on poptropica.
What are some other series, authors, or random books appropriate for a young 6 almost 7 yr old? Thanks