The Valley of the Moon (1913) is a novel by American writer Jack London (as well as the mythic and romantic name for the wine-growing Sonoma Valley of California). The valley where it is set is located north of the San Francisco Bay Area in Sonoma County, California where Jack London was a resident; he built his ranch in Glen Ellen.The novel The Valley of the Moon is a story of a working-class couple, Billy and Saxon Roberts, struggling laborers in Oakland at the Turn-of-the-Century, who left city life behind and searched Central and Northern California for suitable farmland to own. The book is notable for its scenes in which the proletarian hero enjoys fellowship with the artists' colony in Carmel, and he settles in the Valley of the Moon.