The foods included free-range chicken; peanut, apple, and other butters; and granola.
He learned about organic farming from Sir Albert Howard while teaching in northern India.
While in India, he was involved with Mohandas Gandhi and the Indian independence movement.
His first big breakthrough in selling organic foods came when Clementine Paddleford, the New York Herald-Tribune food editor, was entranced by the farm's first product, Apple Essence, an apple butter.
It is no longer in business, but certain foods manufactured by the Hain Celestial Group, a natural-foods conglomerate, bear the "Walnut Acres Organic" label.