There are two significant Doylean dates in the month. The first, today, is Conan Doyle's 158th birthday.
Writing a biographical work on Arthur Conan Doyle has been a challenge ever since his death. However, the nature of the challenge has changed over the decades. In the beginning, the challenge was the inaccurate information in circulation (a good deal put there by Conan Doyle himself) combined with the Conan Doyle family's tight control of access to his papers.
Editor's remarks: My semi-regular contributor Silke Ketelsen has some things to say about Sherlock. It's certainly a robust opinion.