These 45 cars were delivered to NYC in 10/48 for use in general service. They were named in the "Bay" series. IC bought 11 between '59 and '63 and rebuilt them into 9 head end cars and 2 Diner-Lounges (see #4122-R). CN bought 23, 14 of which were rebuilt into Baggage-Dorms and 7 into Daynighters. 10 went to RI and they rebuilt them all to head end cars. 1 was wrecked in '58.