"Prospector is a unified catalog of academic, public and special libraries in Colorado and Wyoming. Through Prospector you have access to 30 million books, journals, DVDs, CDs, videos and other materials held in these libraries." If the University Library does not own the item or if the item is checked out, with a single search DU Library users can identify and borrow many of the materials from the collections and have them delivered to the Library in just three to five working days. Whenever possible, use Propsector instead of Interlibrary Loan to request books. Articles are not available through this service.