The University of Oklahoma Libraries is one of the largest libraries located in Norman, Okla. It has a staff of trained and certified professionals, including assistants, librarians, Web services coordinators and library instructors. The library offers over 63,000 print and electronic serials subscriptions and more than 250 databases. The University of Oklahoma Libraries has been a depository library for federal government documents since 1893. It has a collection of over 50 incunabula and maintains more than 17,000 manuscripts and archives. The library additionally provides nearly 1.6 million photographs and over 1.5 million maps. It specializes in printing, circulation, research consultation and technical support services.