Where did NYC use a H6a light Mikado in 1930-1935? Did they serve smaller branch lines together with a Consolidation? Did they do the required switching on small stations as the Consolidation did it? The H6a is the USRA Mikado built around 1918-1920. At 1930-35 is was only 10 to 15 years old. Was is already demoted to branch line service so fast? If you have now facts about the NYC. How was the USRA Mikado used by other railroads at that time?