Loss of election (Mair): Beginning of McKell's period in office; see David Clune, '1941', in Michael Hogan and David Clune (editors), The People's Choice: Electoral Politics in 20th Century New South Wales, vol. 2 (1930-1965), pp. 167-201, (Sydney: Parliament of New South Wales and University of Sydney, 2001, ISBN 0909907404).
Change of party leader (McKell): 'In February 1947 McKell was appointed to Governor-General on the advice of the Chifley [federal Australian Labor Party] Government. Caucus elected McGirr as leader on 5 February, and he was commissioned on 6 February', Hughes and Graham, p. 78, (see 'Sources', below).
References: For an analysis of the role of Premier in New South Wales, see David Clune and Ken Turner, 'Introduction: The Changing Role of the Premier in the 20th Century', pp. 1-14, in Clune and Turner vol. 2 (see, 'Sources', below).
For a survey of McKell's political career, see Ken Turner, 'William (later Sir William) John McKell', in Clune and Turner, vol. 2, pp. 251-277 (see 'Sources', below), and Michael Easson (editor), McKell: The Achievements of Sir William McKell, (Sydney: Allen & Unwin, 1988, ISBN 0043303897).
David Clune and Ken Turner (editors), The Premiers of New South Wales, vol. 2, (1901-2005), (Sydney: Federation Press, 2006, ISBN 186287551); Colin A Hughes and B D Graham, A Handbook of Australian Government and Politics 1890-1964, pp. 57-85, (Canberra: Australian National University Press, 1968, SBN 708102700); New South Wales, Parliament, The New South Wales Parliamentary Record: Legislative Council and Legislative Assembly, 1824-1999, vol. VI, pp. 246-308, (Sydney: Parliament of New South Wales, 1999). In consulting these sources, note the difference between ministries and periods in office.