Jay O'Brien - Description of modern cattleman, Jay O'Brien The Swamp--O'Brien Ranch - Photos and history of the O'Brien Ranch in Donley County, Texas JA Ranch - Photos and history of the JA Ranch in Armstrong and Donley County, Texas Water Oak Farms - Photos and history of Water Oak Farms in Bradford County, Florida. Australian Agricultural Company - Details of Australia's oldest agricultural company with 18 stations spanning 6.5 million hectares and running up to 400,000 beef cattle. South Shadow - Raises registered and commercial black angus cattle and paint horses. Located in Robsart, Saskatchewan. Dickinson Cattle Co. - Specializing in Texas Longhorn, Watusi, and BueLingo cattle, semen and cattle management tools. Ohio, USA. Exell Ranch - Photos and history of the Exell Ranch in Potter County, Texas