Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 134,769 pages of information and 213,810 images on early companies, their products and the people who designed and built them.
Obituary 1892 
" ...The late Duke was keenly devoted to science as employed for the promotion of the prosperity and material comfort of the tenants on his vast estates. He did more than, perhaps, any other man in the world to utilise cultivation by steam, and at one period he used all the resources and talent of the firm of John Fowler and Co., of Leeds, in this direction. He constructed at his own expense a railway in Sutherlandshire. It is said that an admiring navvy, seeing him start from Dunrobin Station one day, exclaimed to his mate, " There, that's what I calls a real Dook I Why there he is a driving of his own engine on his own railroad and burning of his own blessed coals!" One who knew him well has said of him: "He was ever ready to assist in the development of ingenious ideas in machinery, mechanical appliances, and the like..."