Born in 1873, Barnum Brown enjoyed a successful 66 year career in palaeontology, including holding a post as curator for the American Museum of Natural History. He discovered Tyrannosaurus rex. He was sponsored on digs by the Sinclair Oil Company, who used the dinosaur logo at their petrol stations and handed out his books in the 1930s and 1940s.
Dinosaur remains had been known from the Red Deer River area of southern Alberta from as early as 1884, but it was in 1910 that Barnum Brown and C. H. Sternberg (of the Geological Survey of Canada) competed in the Second Great Dinosaur Rush (after Marsh and Cope), providing insights into the world of the Late Cretaceous.
He was something of a celebrity and eccentric in his time. He was always impeccably dressed, often carrying out his fieldwork dressed in a full length fur coat, and always in a tie and topcoat. Brown died in 1963 at the age of 89.