1. John Walter Gregory-1864–1932;Boswell;Obituary Notices of the Royal Society,1936
2. Bryson B. (2004) A Short History of Nearly Everything (Black Swan, London).
3. Calcutta University (Sadler) Commission Report (1919) 1-5, Report
4. 7-13, Evidence. Superintendent of Government Printing India, Calcutta. (Vols 1-5 were also published in British Parliamentary Papers, 1919).
5. III.—The Volcanic Eruption of 1913 on Ambrym Island, New Hebrides