Williamson, Thomas and Virgoe, Norma, eds. (1993) Religious Dissent in East Anglia:Historical Perspectives - The Proceedings of the Second Symposium on the History of Religious Dissent in East Anglia. Centre of East Anglian Studies, Norwich. ISBN 0-906219-31-0
Williamson, Tom and Taigel, Anthea (1993) Parks and Gardens. B T Batsford Ltd, London. ISBN 0 7134 6728 2
Williamson, Thomas (1993) Gardens and society in eighteenth-century England. In: History from Things. Smithsonian Institute Press, Washington, pp. 74-93. ISBN 1-56098-204-7
Williamson, Thomas (1993) The Norfolk Nonconformist Chapels Survey:some preliminary results. In: Religious Dissent in East Anglia. Centre of East Anglian Studies, Norwich, pp. 47-58. ISBN 0 906219 31 0
Williamson, Tom (1993) The Origins of Norfolk (Origins of the Shire). Manchester University Press, Manchester. ISBN 0-7190-3401-9