A.D. was 7th of 16 children of Sir James Dalrymple and his wife, the daughter of the Earl of Haddington
went to London in 1752, was appointed writer in the British East India Company, being first posted to Madras
thousands of nautical charts, mapping a remarkable number of seas and oceans for the first time, e.g., A Historical Collection of the Several Voyages & Discoveries in the South Pacific Ocean (London 1770-71) ;
first Hydrographer of the British Admiralty & 1779-95 f. East India Company; Royal Society; Royal Swedish Academy of Sciences (for.mem. 1782)
civil engineer John Smeaton ; cartographer J.B. d' ->Après de Mannevillette ;
A. D. compiled a "General collection of nautical publications" from all kinds of sources and employed engr. to improve maps
Australian Dictionary of Biography 1: 1788-850 (1966) ; Howard T. Fry: A. D. and the Expansion of British Trade (London 1970, chapters. IX-X) ; John Blake: Vermessung der Meere, 2007: 20, 40, 68, 73, 77, 83, 98, 108, 137 & 148 ;
See also www.sl.nsw.gov.au/discover_collections/history_nation/voyages/dalrymple/index.html & http://www.sl.nsw.gov.au/discover_collections/history_nation/voyages/dalrymple/maps/index.html.