Robert Roskell Numbers File. I think I am slowly getting the hang of this new board, I could even get to like in a few years time. Though this new thread is about the Roskell File, I do have a question, has anyone done any research on John Cragg and or John Cragg Smith-are they one and the same person? The photograph below is engraved-John Cragg-Smith Bunhill Row London No.4212. Regards, Allan.