Ross E. Davies, George Mason University Law School and The Green Bag, is publishing Some Sort of Map or Chart of the Adventure of the Musgrave Ritual in volume 17, no. 5 of Green Bag Single Sheet Classic. Here is the abstract.
When and where did the Musgrave Ritual germinate, when and where did Sherlock Holmes solve the mysteries of the Ritual and of the disappearance of Rachel Howells, and when and where did Holmes tell the whole story to John Watson? This map and its companion explain. Maybe.Download the map and essay from SSRN at the link.