George Parkin de Twenebrokes Glazebrook (1899-1989) enjoyed two full careers between 1924 and 1967, when he retired. He taught at the Department of History at the University of Toronto and he also worked for the Department of External Affairs, as special assistant, minister in Washington, and assistant under-secretary. Professor Glazebrook is the author of many books including an authoritative study on the history of transportation in Canada, Canadian External Relations to 1914, Canada at the Paris Peace Conference, A Short History of Canada, and A History of Canadian Political Thought. He also turned his attention to social history and wrote Life in Ontario: A Social History and edited, with Katharine B. Brett and Judith McErvel A Shopper's View of Canada's Past.