One of the first elements I drew for my Study in Scarlet Project was 221B Baker Street. From what I can tell, Baker Street would have been a high-class residential area when the stories were written, and the apartment that Holmes and Watson share would probably have been part of a Georgian Terrace house. Although the street itself did exist when A Study in Scarlet was written, the numbers didn’t go up as high as 221 until the street was extended in the 1930s. The residents of the new building almost immediately began recieving both fan mail and genuine letters of inquiry from people hoping to avail of the consulting detective’s services, at a volume that apparently warrented hiring a full time staff member to deal with. XD

In 1990, the Sherlock Holmes Museum opened its doors at numbers 237 - 241 Baker Street, yet claimed the address of 221B. When the leader of the Westminster City Council officially bestowed the famous address upon the museum, a dispute quickly broke out between the museum and the residents of the actual No. 221. It seems the feud wasn’t settled until 2005, when the residents of the real No. 221 left their premises, and the museum was given sole rights to the famous address. To this day, Baker Steet is the only street in London that has a house number out-of-sequence with the rest of the street.; a fun little literary quirk popping up in urban architecture. :)

All this is to say: I based my illustration largely, but not entirely, on 221B as it stands today. It didn’t exist when the story was written, so I felt free to use artist license. Nevertheless, I had fun learning about the history of the address. :)