In 1937 Baldwin Locomotive Works delivered ten Hudson type (4-6-4) locomotives to the New York, New Haven & Hartford. These class I-5 locomotives with 80-inch drivers were assigned to fast passenger service between New Haven and Boston. Boiler pressure was 285 p.s.i. and cylinder dimensions were 22x30 inches. Weighing 365,300 pounds, they mustered a tractive effort of 43,968 pounds. Evaporative heating service totaled 3815 square feet and superheater surface 1042 square feet, with a grate area of 77 square feet. The I-5s had a cast integral frame and roller bearings on all engine axles. With early dieselization of the New Haven these classic Hudsons were withdrawn by 1951, retaining their streamlining till the end. No. 1400 was chosen for the Baldwin builder's portrait.