William James Topley (1845 1930) was a Canadian photographer based in Ottawa. He was the best known of Ottawas nineteenth-century photographers and the most socially prominent one. Topley was noted for his portraiture of Canadian politicians and was a business partner of William Notman, having taken over Notman's Ottawa studio in 1872. The village of Topley in British Columbia is named in his honour.Percy Parker Ghent (1888-1952), X-ray technician, was author of Roentgen: A Brief Biography, published by The Hunter-Rose Company, Toronto, 1924. He was also editor of the Canadian X-Ray Newsletter.