The first guide to the single most comprehensive source of unpublished documentary material on the history of architecture, this major reference work will be essential for anyone seeking source material for the study of architectural history and practice and for the conservation and restoration of the architectural heritage. The British Architectural Library's manuscript and archives collection at the Royal Institute of British Architects is unrivalled in the breadth and extent of its holdings of unpublished material relating to the theory and practice of architecture. The collection, which started soon after the founding of the RIBA in 1834, includes material dating from the early seventeenth century to the present day, ranging from an account of charges for the repair of Richmond Palace supervised by Inigo Jones in 1621-22, to the papers of Berthold Lubetkin. Architecture in Manuscript provides a practical guide to the contents and use of this large and important collection, and will enable researchers, librarians and archivists to locate original source material whose existence has hitherto been very little known. The guide consi