What little card costs nothing at all, and is at home in your pocket at age 8, 18, and 80? The library card is a card for a lifetime! September is Library Card Sign-Up Month, this is a time when the American Library Association and libraries across the county remind parents that a library card is the most important school supply of all. Library cards are FREE and bring you a world of opportunity— no matter what your age. visit this page to learn all about signing up for your free library card.