These papers reflect the long and distinguished career of Professor Jane Roberts in the field of medieval English studies, and especially her pioneering work on A Thesaurus of Old English, which provides novel source material for several of the contributions to the volume. Many of the papers deal with aspects of early lexicology and lexicography, while others focus on linguistic and literary features of Old and Middle English texts and their interpretation. They will thus be of interest to researchers in many areas of early English. A special introductory article describes the interlinked development of A Thesaurus of Old English, The Historical Thesaurus of English, and the proposed Thesaurus of Middle English. Contributors include: Rosamund Allen, Janet M. Bately, Carole P. Biggam, Michelle Brown, Julie Coleman, Janet Cowen, Jodi-Ann George, Joyce Hill, Rosemary Huisman, Giovanni Iarmartino, George Kane, Éamonn Ó Carragáin, Michiko Ogura, Peter Orton, Jeremy J. Smith, E.G. Stanley, Paul Szarmach, Ronald Waldron.