Have you ever seen any Dart, Valiant, Demon or Duster with a rear window defroster?

This subject came up on the FMJ forum. A member there mentioned that in New York, cars that are model year 1974 and later are required to have rear window defrosters. They have a few exclusions but it got me curious...
I have never seen any sort of rear window defroster in any A body, ever. None with the blower motor in the speaker deck, none with the grid embedded in the glass itself. How can that be? I've never seen any dash switches for them on any A body either. How is that possible if they existed?
I had a few Camaro and Firebirds from 1970-78 year models and none of them had them either.
Sure, I'm in California but we get Nevada cars here, it snows in Tahoe and Reno. Of the 70 cars and trucks that I have owned, only the '85 Camaro and '83 Nissan Sentra wagon had them.
I've seen the speaker deck blower motor in B and C bodies, but never an A body.
Have you ever seen one? Do you know the option code for them? In Canada and maybe the northern part of the U.S.A. it is quite common and if anything odd to not see one. I have a 1969 Cuda and i have it in my parts room as it is being resto restored now. Not sure how to send you a photo but i do have it and will not reinstall it as in the winter i drive a 2500 4x4