The World Treaty Index has the aim, when completed, of covering all known agreements in the 20th century. It has been developed out of a hard copy resource first published in 1974. The database can be searched by using either the “flexible search” option which allows results to be filtered by fields such as country, keyword, and date signed, or by exact citation if known. Results are displayed in a tabular format, giving information such as treaty number, date and hardcopy source. Note that full text is not provided by this service.