Cooper, J. B. (22 October 1932), "Beginnings of Portland", The Argus, p. 4, retrieved 13 February 2011
"Portland Bay Extracts". The Sydney Morning Herald. 23 March 1843. p. 4. Retrieved 13 February 2011., quoting the Portland Mercury
openlibrary.org
Lee, Ida (1915), The Logbooks of the Lady Nelson, London: Grafton, p. 328, OL6580132M, The entry for 6 December 1800 states I named this island Lady Julia's Island in honour of Lady Julia Percy.