These are newspaper strips copyrighted by the New York Herald Tribune. They are printed sideways, two dailies or one Sunday per page.
Based on the story by Sir Arthur Conan Doyle. (Title is not provided in the strips.) (Strip for April 6 is missing.) For about the first half of the strip's run, beginning with "The Cask of Jamaica Rum" in issue #2, Mike Sekowsky pencilled the original newspaper strips, and then later Gil Kane plus perhaps Joe Giella, ghosting for Frank Giacoia.