 Described as "the theory of the primacy of communication in the structuring of human cultures and the structuring of the human mind", the school is rooted in the works of Eric A. Havelock and Harold Innis and the subsequent contributions of Edmund Snow Carpenter, Northrop Frye and Marshall McLuhan.Since 1963, the McLuhan Program in Culture and Technology of the Faculty of Information has carried the mandate for teaching and advancing the Toronto School.Several notable works in arts and humanities are based at the university, including the "Dictionary of Canadian Biography" since 1959 and the "Collected Works of Erasmus" since 1969.