Ross, Sir John (1838) On communication to India, in large steam-ships, by the Cape of Good Hope : printed by order of the India Steam-ship Company, and addressed to the British public (London, Smith & Elder) – see http://trove.nla.gov.au/work/18643659?selectedversion=NBD4465283
R. B. Prosser, 'Manby, Charles (1804–1884)', rev. Mike Chrimes, Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, Oct 2007 accessed 19 Oct 2013