I have the book Radar days and it is not therein. The Mysteries of
Canada page is related to TV. An Anson conducted an "attack" on
Parliament hill and a bridge in Ottawa for an excercise.

Details here.

http://www.mysteriesofcanada.com/Military/buzz.htm

I would be surprised if the picture I am looking for is on the
intenet. It is more likely to be in an ancient issue of Aeroplane or
Flypast or in a shoebox under someone's bed or something.

Still, thanks for trying, again.

Waldo.