The Yale University Library website presents contents and info about all 22 libraries of the Yale Library system. Among several catalogues available online, users can search Orbis ? the Yale main OPAC, and Morris – related to the Law Library and including the publications by the Federal Government, as well as many other library catalogues. Many, updated and well organized info and metainfo are available also for visitors. Several digital collections are available, each of them providing some textual, but also image and multimedia contents and resources (maps, original manuscripts, paintings) for all users. Full-text documents – such as the Avalon Project historical documents – are available from the Library’s Digital Collections for free also by non-Yale community members. The website offers a complex linking structure and a good interface design with standardized pages and colors. Multiple-keyword search criteria help users to customize their researches and to identify specific contents. The website offers a complex linking structure and a good interface design with standardized pages and colors. The Yale website is also available, in a reduced version, in some European and Asiatic languages.