Collins Encyclopaedia of Scotland edited by John and Julia Keay, Harper Collins.
Scotland, the facts compiled by Michael T.R.B. Turnbull, Scotland on Line, http://www.facts.scotland.net.
The Scottish Nation 1700-2000 by T.M. Devine, Penguin, 1999.
Intimate Strangers : Political and Cultural Interaction between Scotland and Ulster in Modern Times, by Graham Walker, (Edinburgh 1995.)
Celebrating Columba: Irish-Scottish Connections 597-1997 edited by T.M. Devine and J. F. McMillan, John Donald, Edinburgh, 1999.
The Hollow Drum, Scotland since the War by Arnold Kemp, Mainstream Publishing, Edinburgh, 1993.
History Ireland Autumn 1999 issue devoted to Irish-Scottish issues.