quick answer is, he didn't! I think it was Owen Edwards, in his excellent
biography of ACD "The Quest for Sherlock Holmes: A Biographical Study of
Arthur Conan Doyle," who shows that Doyle based his descriptions of London
streets on his memories of Edinburgh.

Holmes shows an excellent sense of location - in "The Sign of Four," while
being driven in a closed carriage to visit the home of Mr Sholto, Holmes is
able to recite the street names as they pass, based on his memory of the
twists and turns.

Best wishes,
Jeff

>________________________________________________________________________
>
>1.1. Re: Hi
> Posted by: "Tim" tim.symonds@...
> Date: Mon Dec 11, 2006 7:20 pm
>
>
>Just thinking, ACD was not a Londoner and may not have visited London from
>faraway Scotland until he was an adult. How did he set about making sure
>the street directions for Holmes and Watson were correct (assuming they
>were
>correct)? Did Holmes ever refer to a street guide? I believe he referred
>to the famous railway timetables which he had learnt by heart.
>
>

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