H. A. (Harold Austin) Ripley

Writing as H. A. Ripley, Harold Austin Ripley was an American author born in 1896 who became known for Minute Mysteries [Detectograms], a collection of very short mystery puzzles built around clues, logic, and close reading.

Contemporary and library-style sources describe him as a newspaper columnist associated with the Chicago Tribune, and later editions of his work helped keep his "detectogram" format alive for new generations of readers. The appeal of his writing is simple and durable: each puzzle is brief, playful, and designed to make the reader feel like the detective.

Because confirmed biographical information about him is limited in the sources available here, the clearest picture is of a writer remembered less for a public literary persona than for a clever format that has lasted well beyond its original newspaper life.