Shown as No. 240 before being renumbered in 1936, eight-wheeled switcher No. 7640 poses in Buffalo, New York on July 19, 1933 for the same unknown photographer who took the preceding photo of No. 7271 in Toledo two days earlier. (He was evidently heading eastward at the time.) No. 7640 was the first engine of class U-3b, which came from Lima Locomotive Works in 1920-21. Specification for the U-3 class appear on the pages for Nos. 7641 and 7643 following. This member of the class ended her service life in 1955.