Bookstore Tree City Books, located on the main level of the Main Library! Building, sells a variety of used books and media at affordable prices. Tree City Books is open: Monday through Friday: 11 a.m. to 5 p.m.Saturday & Sunday: 11 a.m. to 1 p.m. You don’t need to wait for our seasonal sales to find your next great read! Tree City Books is open year-round and stocks books in all genres, magazines, and select media.The bookstore is staffed entirely by Friends volunteers, and all proceeds benefit the library.