Comment by rramadass

Everybody must own a hard copy of the Canon of Sherlock Holmes - https://en.wikipedia.org/wiki/Canon_of_Sherlock_Holmes

However, the true aficionado needs The New Annotated Sherlock Holmes by Leslie S. Klinger in 3-vols - https://en.wikipedia.org/wiki/The_New_Annotated_Sherlock_Hol...