William Robert Cox was an American author. He was a prolific writer of short stories and Western and Mystery novels mainly for the pulp and paperback markets. He wrote under at least six pseudonyms: Willard d'Arcy, Mike Frederic, John Parkhill, Joel Reeve, Roger G. Spellman and Jonas Ward.

William Robert Cox was an American author. He was a prolific writer of short stories and Western and Mystery novels mainly for the pulp and paperback markets. He wrote under at least six pseudonyms: Willard d'Arcy, Mike Frederic, John Parkhill, Joel Reeve, Roger G. Spellman and Jonas Ward.

William Robert Cox was an American author. He was a prolific writer of short stories and Western and Mystery novels mainly for the pulp and paperback markets. He wrote under at least six pseudonyms: Willard d'Arcy, Mike Frederic, John Parkhill, Joel Reeve, Roger G. Spellman and Jonas Ward.