Alfred Coppel, Alfredo Jose de Arana-Marini Coppel was an American author. He became one of the most prolific pulp authors of the 1950s and 1960s, adopting the pseudonyms Robert Cham Gilman and A.C. Marin and writing for a variety of pulp magazines and later "slick" publishers. Though writing in a variety of genres, including action thrillers, he is known for his science fiction stories which comprise both short stories and novels.
