I was curious why the AC&Y bought the H20-44 to begin with? Then they bought two more later? The reason I bring this up is that the H16-44's continuous tractive effort (CTE) was 48600 lbs. and the H20-44's was 42800 lbs. CTE is what pulls the load, Horsepower pulls the same load a little faster. AC&Y's maximum speed limit was 40 mph (I realize that in practice rules are meant to be broken). AC&Y tonnage ratings had the H20-44's rating higher than the H16-44's. This is not correct according to the CTE. An H16-44 should have pulled more tonnage. Would not have it made more sense to buy two more H16-44's later on than two more H20-44's? For that matter why didn't the AC&Y just buy 15 or 16 H15/16-44's? No Alcos or H20's would have simplified maintenance and parts supplies theoretically saving money. I know hindsight is 20/20 and it is easy to second guess. I just wonder what the thought process was.