Hannibal and St. Joseph Railroad No. 570 to 573 were ordered originally as H&StJ 681 to 684. These were changed to KCStJ&CB, same numbers but, as the engines were to be used on the H&StJ, they were lettered with the initials of that road, and H&StJ 840 and 841 were ordered as H&StJ No. 686 and 687. These were changed to CB&KC, same numbers, but also lettered for the H&StJ. These changes were made at the Baldwin Works before the engines were delivered, which explains why the Baldwin Works issued a photograph of H&StJ 687 while the records show the engine to have been delivered under another number.
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