The Sherlock Holmes its headquarters on the purported site of 221B Baker Street), decided to create an exhibition based on the fictional detective Sherlock Holmes. Four Holmes enthusiasts (with the support of the family of Sir Arthur Conan Doyle) designed and planned the exhibition, collecting materials (many of them donated) for display, including a Persian slipper to hold Holmes’s tobacco, a gasogene for Dr Watson's soda, and a jack-knife for Holmes to pin his unanswered correspondence to the mantelpiece with. In Abbey House on Baker Street Holmes' sitting room at 221B Baker Street was created. Each day crumpets were supplied by a local
Canon of Sherlock Holmes recent years further investigations have revealed more to the traditionally collected canon. As there exists no definitive body to argue what is, and what is not canon beyond the already established novels and stories, it is unlikely that any piece, no matter how good its claim to be "canonical" will ever be popularly received into published versions of the Complete Sherlock Holmes. However, as many as eighteen works have been cited as possible entrants. These works include plays, poems, essays on the character, and even short stories. Published collections of extracanonical works include: "Sherlock Holmes: The Published Apocrypha", edited by