| A note on the back of the photo states "In a recent order of U23B's for L&N, 2745-49 were experimentally set to produce 2700-2800 HP, a U27B? Thius is a sometime practice of Builders to test components: other examples were 3900 HP SD45, 3000 HP U28, 5600 HP U50D, etc." Lee Yoder photo |