The exact same code was copied by Arthur Conan Doyle in his Sherlock Holmes story "The Adventure of the Dancing men". He just substituted the symbols in the code with different ones.
Arthur Conan Doyle himself acknowledged Edgar Allan Poe's influence in his creation of Sherlock Holmes. So fans of detective fiction should absolutely read the three stories featuring Poe's hero Auguste Dupin;
1) The Murders in The Rue Morgue.
2) The Mystery of Marie Roget (supposedly based on a true story).
3) The Purloined letter.
(1) and (2) in particular have fantastic chains of reasoning which is just delightful.