Again... wow! Thanks ghYHZ and ns_kid for your great stories and imagery. There's a lot to absorb there, and I intend to look into it in detail when I have a little more time.
The Canadian Rail document that ns_kid posted made a reference to issue #212, so I looked that up to read a little more about the society. I was pleased to find a photo of the baggage car mentioned earlier.
Here's the link:
https://www.exporail.org/can_rail/Ca...no212_1969.pdf
It's a little more than halfway down the pdf document.
Fascinating information!