Part 1 Introduction: Gaylord Donnelley (1910-1992), C.J. Taylor; the Parker Library and its collections today, R.I. Page. Part 2 The bibliographer and the conservator: the conservator and the scholar, R.I. Page; the character of a trimmer - bibliography and the conservator, Nicolas Barker; evidence in the printed book and the avoidance of damage, David McKitterick; physical evidence and manuscript conservation - a scholar's plea, Mildred Budny. Part 3 Buildings: maintaining satisfactory environments in the Parker Library, Nicholas Hadgraft; preservation factors in the design of new libraries - a building services engineer's viewpoint, James R. Briggs; preservation factors in the design of new libraries - an architect's viewpoint, Francis Hookham. Part 4 Materials: rediscovering parchment - the nature of the beast, Christopher Clarkson; some considerations in regard to the need for pigment identification and analysis and some methods suggested, Cheryl Porter; considerations when treating paper manuscripts, Nancy Bell. Part 5 Case studies: the conservation of the Parker Roll, Deborah Willis; the conservation of CCCC MS.197B, Nicholas Pickwoad; the rebinding of CCCC MS.280, Melvin Jefferson. Part 6 Techniques: in-situ treatment of manuscripts and printed books in Trinity College, Dublin, Anthony Cains; storing and boxing the Parker Library manuscripts, Nicholas Hadgraft; distinguishing between the good and bad repair of books, Nicholas Pickwoad; Roger Powell and his early manuscripts in Dublin, Anthony Cains. Part 7 Valedictory: Sydney Morris Cockerell - a tribute by one of his journeymen, Anthony Cains.