When did we get power steering and brakes?

[BusaDave9]

Just trying to get my facts strait.
I am trying to find 4 dates.
What year did power steering first become available as an option on CJs? Then when did it become standard?
Same with power brakes. When did they first become an option and then become standard?

 

[CJ007]

I found a couple links that might help eliminate some years if nothing else.

Identifying a Jeep, An In-depth Spotters Guide to the 72-75 AMC Jeep CJ-5 | jeepfan.com
Jeep spotters guide identify a Jeep CJ-5 Cherokee CJ-7 M38 | jeepfan.com
1975 and 1976 Jeeps: CJ, Cherokee, Wagoneer, and Pickup

Looks like AMC made power steering an option when they took over in 72' and all searches I did appear that it was not standard on most until 79'.