Trackmen and Trainman Intro
An attempt to introduce the first section of the Clark paper (Just the Facts, Ma'am) while also introducing students to the basic whys and wherefores of RR operations including the differences in training, duties and responsibilities of Trackmen (such as Clark and the Housemans) and Trainmen (broadly, Engineers, Conductors, Brakemen, Switchmen, at least for our purposes).