Biography of Jack London, author of *White Fang*, *People of the Abyss* and *Martin Eden*, among others. Covers his early life at sea and as a hobo on the railways, his experiences in the Klondyke gold rush, and his later life as an author, socialist and rancher. (Source: [Fantastic Fiction](https://www.fantasticfiction.com/s/irving-stone/sailor-on-horseback.htm))