Harold MacGrath was a Bestselling American Novelist and Screenwriter.
His bestselling novels which were very popular in the mass market included the elements of love, adventure, mystery, spies, etc.
He was the first major author whose Novels were routinely made in to movies and who wrote directly for the movies.
Harold MacGrath Novels
The Adventures of Kathlyn (Illustrated)
Arms and the Woman
The Drums of Jeopardy
The Goose Girl (Illustrated)
The Grey Cloak (Illustrated)
Half a Rogue
Hearts and Masks (Illustrated)
Man on the Box
Parrot & Co. (Illustrated)
The Princess Elopes (Illustrated)
The Puppet Crown
The Ragged Edge
A Splendid Hazard
The Voice in the Fog (Illustrated)