Rancho Mission Viejo is doin' it 'til the cows come home. The working cattle ranch is 23,000 acres of land in Southern California's Orange County, including more than 500 acres of citrus groves. It is a producer of lemons, as well as avocados, beans, and barley. Purchased in 1882 by Richard O'Neill, Sr. and James Flood, the ranch has been owned and managed by members of the O'Neill family and its descendants. A majority of the land is reserved as permanent open space for parks and wilderness reserves, while other portions are leased out for business and industrial uses, such as sand and gravel mining, seed collection and plant growing, and aerospace, telecommunications, and utilities operations.