Jack Owen Jardine

Jack Owen Jardine (1931–2009) was an American writer whose work appeared under his own name and under several pseudonyms, including Howard L. Cory and Larry Maddock. Reference sources connect him especially with science fiction and adventure fiction, where he became known for fast-moving, imaginative stories written for the mass-market paperback era.

As Howard L. Cory, he collaborated with Julie Ann Jardine, and that shared byline is credited with novels such as Sword of Lankor and The Mind Monsters. Under the Larry Maddock name, he was also associated with thriller and spy fiction, showing a range that stretched well beyond one genre.

Jardine's career reflects a time when many dependable storytellers wrote across categories and identities, building long bibliographies while staying mostly behind the scenes. Though not as widely remembered as some of his contemporaries, his work still turns up in genre databases, collector circles, and reprint discussions.