Those NFB films are dangerous to watch. Seeing stuff like “Train 406” or “End of the Line”, which gives North America steam’s most fitting epitaph, really pulls the curtain back for a nice view of how railroading was in the era of 40’ box cars and streamliners. The films are a whole lot easier to take in compared to the corny Ho-ra-ra private enterprise blather that US trade films had at the time.
My personal favorite is “Station Master,” which is great portrait of the human side of railroading in a small town. Oh to live that way, life would be nothing but a peach.