Y'all might already be aware of this, but I came across these videos on Youtube a few days ago under the titles "Chemins de fer disparus". There are 30 or so videos of French railways, mostly black and white movies shot in the 1950s and 1960s. Very interesting. One of the videos has CdN No.36 Corpet-Louvet in action. There are also several of the CFD Vivarais. I killed most of an evening viewing them.
"It is one of the happiest characteristics
of this glorious country that official utterances are invariably
regarded as unanswerable."
-Sir Joseph Porter, First Lord of the Admiralty (HMS Pinafore)