1940's Montreal on Google Maps

Catbus has created an application that allows you to view 1947 aerial imagery of down-town Montreal on Google Maps.

Using the map it possible to compare the 1947 aerial imagery with Google's satellite view. You can view the map in full-screen mode here. 

Also See

Neighborhood Change in Connecticut - historical aerial imagery of Connecticut
The New Jersey State Atlas - aerial photography of New Jersey from the 1930's
Old Maps of Moscow - a  large collection of historical maps and aerial imagery of the Russian capital