Duffy, P.J. (1998) Locality and changing landscape: geography and lcoal history. In: Doing local history: pursuit and practice. The Institute of Irish Studies, The Queen's University Belfast, pp. 24-46. ISBN 0 85289 676 6

Duffy, P.J. (1997) Management problems on a large estate in mid-nineteenth century Ireland: William Steuart Trench's report on the Shirley estate in 1843. Clogher Record, XVI (1). pp. 101-122. ISSN 0 949012 14 9

Duffy, P.J. (1995) Perspectives on the making of the Cavan landscape. In: Cavan: essays on the history of an Irish county. Irish Academic Press, Dublin, pp. 14-36. ISBN 0-7165-2554-2

Duffy, P.J. (1988) The Evolution of Estate Properties in South Ulster 1600 - 1900. In: Common ground: essays on the historical geography of Ireland presented to T. Jones Hughes. Cork University Press, Cork, Ireland, pp. 84-109. ISBN 0 902561 53 7

Duffy, P.J. (1983) Farney in 1634: an examination of John Raven's Survey of the Essex Estate. Clogher Record, XI (2). pp. 245-256. ISSN 0 9501047 7 9