The World Digital Library (WDL) is an international digital library operated by UNESCO and the United States Library of Congress. The WDL has stated that its mission is to promote international and intercultural understanding, expand the volume and variety of cultural content on the Internet, provide resources for educators, scholars, and general audiences, and to build capacity in partner institutions to narrow the digital divide within and among countries. It aims to expand non-English and non-western content on the Internet, and contribute to scholarly research. The library intends to make available on the Internet, free of charge and in multilingual format, significant primary materials from cultures around the world, including manuscripts, maps, rare books, musical scores, recordings, films, prints, photographs, architectural drawings, and other significant cultural materials. The WDL opened with 1,236 items. As of early 2018, it lists more than 18,000 items from nearly 200 countries, dating back to 8,000 BCE. History and concept After almost 20 years without participation, the United States re-established its permanent delegation to the United Nations Educational, Scientific and Cultural Organization (UNESCO) in 2003. Dr. James H. Billington, Librarian of Congress, was nominated as a commissioner of the U.S. National Commission to UNESCO and was invited to give a plenary speech at its inaugural conference in June 2005. His speech, entitled A View of the Digital World Library, described a vision in which the rich collections that "institutions, libraries, and museums have preserved could be given back to the world free of charge and in a new form far more universally accessible than any forms that have preceded it." Google Inc. became the first partner of this public–private partnership and donated $3 million to support development of the World Digital Library in 2005. At the National Commission's 2006 annual conference, Dr. John Van Oudenaren, Senior Advisor for the World Digital Library at the Library of Congress, outlined a project plan for bringing Dr. Billington's vision to fruition. Foremost was the belief that the World Digital Library should engage partners in planning the four main project areas: technical architecture, selection, governance, and funding. This was achieved in December 2006, when 45 national library directors, library technical directors, and cultural and educational representatives from UNESCO met in Paris to discuss the development of the World Digital Library. The participants formed working groups to address the special challenges of each of the four project areas. The working