This calendar, with illustrations, is a reference service focusing on multilateral treaties concluded by more than two parties. It covers a period of almost 350 years of multilateral diplomacy, from the Peace of Westphalia of 1648 to the end of 1995. It lists chronologically all multilateral treaties concluded during that period, provides information on the location of their printed text in various collections (with parallel citations), adds data on duration, depository arrangements, & status, & provides extensive notes on their amendment, modification, extension, termination, & other details (with related references). It ends with appendices & a detailed index.

The relations of Great Britain and its Dominions significantly influenced the development of the British Empire in the late 19th and the first third of the 20th century. The mutual attitude to the constitutional issues that Dominion and British leaders have continually discussed at Colonial and Imperial Conferences respectively was one of the main aspects forming the links between the mother country and the autonomous overseas territories. This volume therefore focuses on the key period when the importance of the Dominions not only increased within the Empire itself, but also in the sphere of the international relations, and the Dominions gained the opportunity to influence the forming of the Imperial foreign policy. During the first third of the 20th century, the British Empire gradually transformed into the British Commonwealth of Nations, in which the importance of Dominions excelled. The work is based on the study of unreleased sources from British archives, a large number of published documents and extensive relevant literature.