Entlich, R., Garson, L., Lesk, M., Normore, L., Olsen, J., and Weibel, S., “Making a Digital Library: the Contents of the CORE Project,” ACM Trans. on Inf. Sys., 15, 2, pp. 103-123, Morgan Kaufmann, London (April 1997). Also presented at the Public Record Office, Kew; see their con- ference on preservation.