The Nuttall Encyclopedia
MacAdam, John Loudon
Scottish engineer, born at Ayr; inventor of the system of road-making which bears his name; he made his fortune as a merchant in New York, but spent it in road-making (1756-1836).
Wood, James, ed. Entry for 'MacAdam, John Loudon'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/m/macadam-john-loudon.html. Frederick Warne & Co Ltd. London. 1900.