Biodynamics has played a key role in environmental and sustainable development. Rudolf Steiner founded the Experimental Circle of Anthroposophic Farmers and Gardeners at Koberwitz (now Kobierzyce, Poland) in 1924. The task for the Experimental Circle was to test Steiner’s ‘hints’ for a new and sustainable agriculture, to find out what works, and to publish and tell the world. Ehrenfried published his book Bio-Dynamic Farming and Gardening in New York in 1938, fulfilling Steiner’s directive. In the interval, 1924-1938, 39 individual Americans joined the Experimental Circle. They were the pioneers of biodynamics and organics in USA, and finally their names and locations are revealed. Of the 39 members, three received copies of the Agriculture...