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. A road novel 50 years before Kerouac, The Valley of the Moon traces the odyssey of Billy and Saxon Roberts from the labor strife of Oakland at the turn of the century through central and northern California in search of beautiful land they can farm independently.