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^Gavin Stamp, ‘Hamilton, Thomas (1784–1858)’, Oxford Dictionary of National Biography, Oxford University Press, 2004. Retrieved on 2 November 2007.
^ Kenny Farquharson and Joanne Robertson, ‘Calton Hill backers admit it is too small for parliament’, Sunday Times, 2 April 2000, Home News Section, p. 2 – Scotland News.
^ David Denver, Scotland Decides: The Devolution Issue and the 1997 Referendum. London, Frank Cass, 2000, pp. 192-3. ISBN 0-7146-5053-6.
^ ‘Holyrood hold-up casts shadow over photography project’, The Times, 11 November 2005, Home News Section, p. 32 – Scotland.