World Digital LibraryU.S. Library of Congress and United Nations Educational, Cultural and Scientific Organization (UNESCO) - The WDL makes available on the Internet, free of charge and in multilingual format, significant primary materials from all countries and cultures.The WDL makes it possible to discover, study, and enjoy cultural treasures and significant historical documents on one site, in a variety of ways. Content on the WDL includes books, manuscripts, maps, newspapers, journals, prints and photographs, sound recordings, and films.