(Thanks @koolie62 for the tip!)
See also: Ottawa History Guide
If you liked this post, you should subscribe to etcetera, our free email newsletter. Featuring cool Ottawa events, interesting local news and contests and giveaways. Thanks!
Archival photo showing a model of a mushroom cloud detonating in Cold War-era OttawaSHARE THIS
Seen on the Canadian Civil Defence Museum Association web site: “Ottawa Atom Mushroom Cloud Model Used in Canadian Civil Defence Course”. Yikes.