Scanned from a snapshot from the early 1950's
A shot of a Bell 47D-1 Helicopter, the Bell 47D was introduced in 1946 with the 47D-1 being introduced in 1949, later variants remained in production till 1974
I haven't been able to find out much information on the aircraft in the picture CF-GYV other than the registration was cancelled and later used for a Cessna