The Valley of the Moon (1913) is a novel by American writer Jack London. 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.

John Griffith "Jack" London (January 12, 1876 – November 22, 1916) was an American author, journalist, and social activist. He was a pioneer in the then-burgeoning world of commercial magazine fiction and was one of the first fiction writers to obtain worldwide celebrity and a large fortune from his fiction alone. Some of his most famous works include The Call of the Wild and White Fang, both set in the Klondike Gold Rush, as well as the short stories "To Build a Fire", "An Odyssey of the North", and "Love of Life". He also wrote of the South Pacific in such stories as "The Pearls of Parlay" and "The Heathen", and of the San Francisco Bay area in The Sea Wolf.