This series contains correspondence, etc., of the Treaty Department and its successors, including the Prize Court Department, 1914 to 1920, and the Dominions Information Department, 1926 to 1928. Subjects covered include treaty correspondence with other countries; shipping claims against Russia and Japan arising from the Russo-Japanese war; honours and decorations; territorial waters; extradition treaties; nationality; consular and diplomatic appointments; prize courts; diplomatic privileges; civil procedure; marriage regulations; deportation agreements and various royal matters, including state and royal visits.
FO 372/3360-3410 are numbers not used.