Model railroading had never seen such a thing before. What had started as a model railroad curiosity had blossomed into a major sector of the model railroad hobby in less than a decade. Arnold and Minitrix had been the initial drivers of this phenomenon, but by 1968, the N-Scale sector of the model railroad had become crowded with players.  Consider the companies which had started producing N-Scale in 1968:

a).  It should be noted that the Revell rapido product line also used the term “Microtrains”, which should not be confused with the manufacturer Micro-Trains Line, a contemporary manufacturer of N-Scale equipment.  The Kadee Micro-Trains product line later became the independent entity Micro-Trains Line. It should also be noted that several of these companies are still in the N-Scale sector, producing in other countries.