United Nations LibraryClearinghouse of UN documents. Resources of greatest relevance to your projects include: (1) the United Nations Digital Library, which includes UN documents, voting data, speeches, maps, and open access publications; (2) the Official Document System, which provides full text search of documents issued since 1993 and resolutions of all principal organs and Security Council plenary documents since 1946; and (3) the Yearbook of the United Nations, a reference work that provides a detailed overview of the Organization's activities during the course of a year.