These were the first electric multiple units ever bought by the New York Central Railroad.

This would give the New York Central a grand total of 353 EMUs, which were all motor cars as there was never any trailers ordered.

Even though several of the worst cars were removed from service, the rest of the 1906/1907 MUs soldiered on until the next orders of ACMUs in 1962 and finally in 1965.

The remaining cars dating from 1924-1929 survived into the Penn Central era.

They were built by Standard Steel and renumbered 1250-1296 to make room for other equipment that Penn Central inherited.