The Mayo Medical Libraries system is one of the largest in the world. In addition to more than 400,003 bound volumes and 4,712 medical and scientific journals, many resources, databases and search engines are available. Libraries at all three Mayo Clinic campuses offer electronic systems for search and retrieval from worldwide information resources. You can perform literature searches from most of the hundreds of networked computers around Mayo's campuses. In addition, reference librarians are available to arrange inter-library loans and help you learn how to use Mayo's access to the Internet, Medline and other database services.