Contributed by the Glen Ellen Historical Society In the 1850s, around the time of the California gold rush in the Sierra foothills, the place inside the curve of Highway 12 where Arnold Drive and Dunbar Road converge, now known as Glen Oaks, was part of the 3,200-acre Agua Caliente land grant. Owned by General Mariano Vallejo, the busy commander of Alta California who made his home down the