First, as a follow up to my previous posting, and as a way of fulfilling a promise (to Fred and others), here is some information about 221B Baker Street that you might be interested in knowing:
221B Baker Street was the residence of Sherlock Holmes (and, for a while, Dr. John Watson) from the beginning (c. 1880s) until approximately 1903.
Located in the West End of London, Baker Street was laid out in the 18th century and named for Sir Edward Baker (1763-1825). About five blocks long, the street had buildings numbered consecutively, south to north, from 1 to 42 on the east side, and southward from 44 to 85 on the west side. There was no 221, so the Holmes address was a fiction.
However, sometime in the 1930s, Baker Street was reconfigured and the buildings were renumbered. This resulted in an actual 221 Baker Street, which was for a time the home of a firm called Abbey National. The company for many years employed someone to answer mail addressed to Sherlock Holmes at 221B Baker Street. Whether or not that peculiar arrangement continues, I have not been able to discover. Perhaps someone else knows more facts.
Today, of course, 221 Baker Street has become a tourist destination (and trap).
* * * * *