The Bergen County Cooperative Library System (BCCLS) is a consortium of public libraries in the four northeastern New Jersey Gateway Region counties of Bergen, Hudson, Passaic, and Essex. Founded in 1979, the organization allows for reciprocal borrowing among its members so that books, audiobooks, CDs, DVDs and other media are shared among the libraries cooperatively. Those with a valid library card from participating towns are permitted to reserve materials online and have them transferred to their local library, where materials can be retrieved.