When did Ford change to spline steering wheel

What year did Ford change from keyway steering wheels,to splined steering wheels.Thank's

 

Best I know was '54 was splines.

 

'49

 

Anybody out there care to add some more info to this thread?
I am curious how long did Ford use that first spline pattern and size. (oh and what is the size/spline count)
I need to find out as I need to convert my 34 Chevy Master steering box/shaft (keyed) to splines for my 50 Ford Steering wheel.
Thanks in advance.

 

Dreddybear is correct...

 

Yep, 1949.

 

When in high schoo; I had a 50, and it had a splined wheel, so I would suppose that when the car changed in 49 that changed as well