Located in Tulare, California -- along with about a quarter of a million dairy cows, tops worldwide -- feed and grain maker J.D. Heiskell & Company has taken the real estate mantra to heart. But in addition to this location, location, location, Heiskell also has three other mills in California and Idaho and a network of merchants that positions the company to be among the leading feed providers in the Western US. The company is still controlled by descendants of founder Jefferson Davis Heiskell.