https://en.wikipedia.org/wiki/List_of_tallest_buildings_in_Canada#Tallest_buildings_in_Canada
https://en.wikipedia.org/wiki/Toronto%E2%80%93Dominion_Centre#Technical_details TD
https://skyscraperpage.com/diagrams/?cityID=12&status=15 ,
https://en.wikipedia.org/wiki/Complexe_Desjardins#Structures
https://en.wikipedia.org/wiki/List_of_tallest_buildings_in_Montreal#Tallest_buildings ,
https://skyscraperpage.com/diagrams/?cityID=22&status=15 ,
https://skyscraperpage.com/diagrams/?cityID=22&searchname=timeline
BC
https://skyscraperpage.com/diagrams/?stateID=1&status=15