Cdf du Nord railcar - voitures à vapeur - no. 7 is depicted here at Boulogne on 14/9/30. These units rejoiced in the nickname cage à poules (chicken coop) which stemmed from the use of wire netting across the fronts of the luggage compartments.
This articulated unit was built in 1908/9 by by Robatel & Buffaut. The steam locomotive is self-evidently in the centre of the ensemble and was one-man-operated from a high vantage point. There was also a chef du train as shown here and he was what we would describe as a "conductor" in today's terminology. These units were bi-directional with a set of contreols in the cab for each direction and were designed for use on lightly laid branch lines similar in concept to the British term "light railways".
I don't have a withdrawal date but all these untits were scrapped in the 1930's.
[Mike Morant collection]