Egan, D.E., Lesk, M.E., Ketchum, R.D., Lochbaum, C.C., Remde, J.R., Littman, M., and Landauer T.K., “Hypertext for the Electronic Library? CORE sample results,” Proc. Hypertext ’91, 38, 4, pp. 299-312, Univ. Nevada Las Vegas, San Antonio (15-18 Dec. 1991). Also presented at the Public Record Office, Kew; see their conference on preservation.