These two pages were taken from my July 1, 1909 roster book. As can been seen, motor cars, 2100-2106, were added after the roster book was published. The roster book lists rows (car numbers) regardless of whether or not a particular number is used. It's my opinion, that the author of the edit, chose vacant numbers, 1126-1132, as a place to add the new GE motor cars. There is no evidence in the motor car diagram book that cars 2100-2106 had a previous number. July 1, 1909 annotated roster book; my collection.