Interlibrary loan (ILL) allows library patrons to borrow materials not available in their local library collection by requesting them from other libraries through an ILL department. The document provides instructions for creating an ILLiad account to submit ILL requests online and track their status. Patrons will be notified by email when requested articles are available electronically or physical items can be picked up at the circulation desk. ILL requests are usually filled within two business days, and there is no cost for patrons to use interlibrary loan services.