Pre-paid envelopes. With respect to the lower envelope, the reverse advises: Faced with increasing competition from highway transport after the 1914-18 war, railway companies began to acquire more economical self-propelled rail cars. This six-cylinder gasoline-powered car, built by the Ledoux-Jennings Company of Montreal, carried mail, baggage, and passengers on the Temiscouata Railway from 1933 to the early 1940's