Jack London was an American author who wrote The Call of the Wild, White Fang, and The Sea Wolf along with many other popular books. A pioneer in the then-burgeoning world of commercial magazine fiction, he was one of the first Americans to make a lucrative career exclusively from writing. . .Writer and historian Dale L. Walker writes: «London's true metier was the short story... London's true genius lay in the short form, 7,500 words and j under, where the flood of images in his teeming brain a