LT HIS paper is written in the belief that special libraries are created, maintained, and improved by the constant collaboration of their users and their librarians. It is addressed to research-workers rather than to librarians, and to the readers of this Journal in particular because the Royal Institute of International Affairs, the leading specialist research centre for international affairs in the United Kingdom, is a particularly fertile ground for such collaboration. The national public library service aims, and to a great extent succeeds, at providing for any student anywhere by means of the system of interlibrary loans any book, pamphlet, document, or periodical, both for reference and where necessary for home-reading, for which he asks. But the specialist requires the principal sources and material for his studies to be gathered together in one place and arranged for his use so that, to quote Arnold Toynbee, he can get a synoptic view of his subject and enjoy the added value which material acquires when organized in a particular context with other relevant items. This accounts for the establishment of special libraries. No attempt is made here either to list a large number of libraries and describe their stock, or to make union lists of the holdings of libraries. Both these activities are adequately performed elsewhere. My purpose is to identify myself with the researcher in current international affairs, to choose some typical categories of material which he will need, and to test and evaluate the relevant libraries from his point of view. Finally I hope to indicate some of the difficulties which he may encounter, in the hope that by co-operative planning improvement may be achieved. If the required material is satisfactorily located in a few relevant libraries no account will be taken of the fact that it may also be available elsewhere. Indeed whenever it is found that the specialist needs to use more than two or three libraries this will be held to indicate a degree of inadequacy. Before concentrating on the relevant special libraries something must be said about subject specialization within the public library system. This is a fairly recent development dating officially from i April I948 when the Metropolitan Public Libraries Special Collections came into being.' In this scheme it was agreed among other things that the twenty-eight
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