If you are sufficiently interested in Edinburgh and its festivals to investigate further then here is my list of sources.
Bain, A., The Fringe: 50 Years of the Greatest Show on Earth, The Scotsman Publications Ltd, 1996
Bruce, G., Festival in the North: Story of the Edinburgh International Festival of the Arts, Hale, 1975
Dale, M., Sore Throats and Overdrafts: An illustrated story of the Edinburgh Festival Fringe, Precedent Publications Ltd, Edinburgh, 1988
Fisher, M., The Edinburgh Fringe Survival Guide: How To Make Your Show A Success, Methuen Drama, London, 2012
Miller, E., The Edinburgh International Festival, 1947-1996, Scolar Press, Aldershot, 1996
McMillan, J., Carnegie, J., The Traverse Theatre Story 1963-1988, Methuen Publishing, London, 1988
Moffat, A., The Edinburgh Fringe, Cassell Ltd, London and Edinburgh, 1978
Arnot, H., The History of Edinburgh, Turnbull, Edinburgh, 1818
Buchan, J., Capital of the Mind: How Edinburgh Changed the World, John Murray, London , 2003
Chambers, R., Traditions of Edinburgh, W. & R. Chambers, Edinburgh, 1980
Edinburgh Town Council, Edinburgh 1329-1929, Oliver & Boyd, Edinburgh , 1929
Fawcett, R., Edinburgh Castle , HMSO, 1986
Gow, I., The Palace of Holyroodhouse Official Guidebook, Royal Collection Publications, London , 2004
Guy, J., ‘My Heart is My Own’ The Life of Mary Queen of Scots, Harper Perennial, London, 2004
Book of the Old Edinburgh Club, 40 volumes published periodically since 1908
Youngson, A.J., The Making of Classical Edinburgh, paperback ed., Edinburgh University Press, Edinburgh, 2002
Gifford, J., McWilliam, C., Walker , D., The Buildings of Scotland – Edinburgh , Yale University Press, New Haven , 2003
McKean, C., Edinburgh, An Illustrated Architectural Guide, Scottish Academic Press, Edinburgh, 1983
General
Irvine , P., Scotland The Best, Collins, 2005
Recent Publications (not used as sources)
Fry, M., Edinburgh: A History of The City, Macmillan, London, 2009
Potted History of Assembly Rooms in EdinburghGuide.com, 2010
David McLean’s Lost Edinburgh. See Facebook page. Articles are periodically printed in The Scotsman.
University of Stirling’s Archives. Edinburgh International Film Festival – The Beginning.
Bartie, A., The Edinburgh Festivals: Culture and Society in Post-war Britain, Edinburgh University Press, Edinburgh, 2013.
BK .. This and That 