Australian Dictionary of Biography online, 11 April 2017 (Sir Thomas Livingstone Mitchell (1792-1855), surveyor-general, was born on 15 June 1792 at Grangemouth, Scotland. After working in the army as a topographer and cartographer, Mitchell in 1827 with Sir George Murray's support became assistant surveyor-general of New South Wales. In 1828 he became surveyor-general and embarked on a general survey of the colony. The main roads out of Sydney still follow essentially his routes. After conflict with Governor Darling he pushed on with explorations deeper into New South Wales, including Australia Felix (what became western Victoria). He was knighted in 1839, while in England on leave during which time he drew plans of the battles of the Peninsular wars. He continued with several major exploring expeditions, but continued to have difficulties with governors and the colonial government in New South Wales. In January 1855 a critical pamphlet appeared under the pseudonym Ichneumon, believed to be by either Mitchell or perhaps his son Livingstone, though Mitchell himself denied it. While engaged in a survey he caught a chill and contracted pneumonia, and died at his home in Sydney on 5 October 1855.)http://adbonline.anu.edu.au/biogs/A020206b.htm
Foster, W.C. Sir Thomas Livingston Mitchell and his world, 1792-1855, 1985.
His Three expeditions into the interior of eastern Australia, 1965 t.p. (Major T.L. Mitchell, F.G.S. & M.R.G.S.)
LC data base, 4-9-84 (hdg.: Mitchell, Thomas Livingstone, Sir, 1792-1855)
LC/NAF 11 April 2017 (Mitchell, T. L. (Thomas Livingstone), 1792-1855)