Why was 'the cardboard box' by Arthur Conan Doyle released in 1917?

Answer 1

You probably recall that the story was originally published in The Strand Magazine in 1893, but Conan Doyle had it removed from the collected 'Memoirs of Sherlock Holmes' because it contained a rather risque (for Victorian England) episode of adultery. The "mind-reading episode" from the beginning of that story was transplanted into 'The Resident Patient,' and it has remained in the American versions of the story to this day. Doyle had a change of heart (perhaps because of the change in morals or perhaps for the money), and he had it included in the collection of short stories titled 'His Last Bow' 24 years later.

You may notice that both stories now contain the "mind-reading episode" in the American versions.