CN Tower: June 26, 1976

https://www.thestar.com/news/gta/2016/06/24/june-25-the-cn-tower-turns-40-and-one-mans-obsession-is-to-tell-its-stories.html

https://www.thestar.com/news/gta/2016/06/25/cn-tower-celebrates-40-years-as-a-tourist-magnet-and-lightning-rod.html

http://www.cntower.ca/en-ca/home.html

http://www.cntower.ca/en-ca/about-us/history/topping-of-tower.html