Foreign Affairs of the US - S 1.1:FRUS began in 1861 and consists of sensitive correspondence, other documents of the State Department, and other materials affecting the foreign relations of the U.S. Materials are not released for publication until 25 years after they were originally produced. Prior to 1861 similar materials were printed in the Annual Report of the Secretary of State which can be found in the Serial Set, and indexed in Lexis/Nexis Congressional. See also digital versions of FRUS: