Trizec was created as a holding company of Montreal-based Webb & Knapp (Canada) Limited, in July 1961. It was a Toronto-based amalgamation of three ("tri") concerns; "z" (William Zeckendorf of Webb & Knapp), "e" (Eagle Star Insurance of London, England), and "c" (Covent Garden Properties, also of London). By 1968, Trizec was Canada's largest shopping center operator, with holdings such as Burnaby, British Columbia's BRENTWOOD CENTRE (1961) and Toronto's YORKDALE CENTRE (1964).

Graphic from Trizec Corporation, Limited