Community-Supported Agriculture is a direct reciprocal relationship between farmers and consumers. Shareholders provide financial support to the farm for a season, and in return receive a weekly share of the harvest. Different forms of this concept arose independently in the 1960s in Japan (the Teikei system), Chile, and the United States, where the Tuskegee Institute’s Booker T. Whatley urged small farms to start Clientele Membership Clubs to serve their local communities. A similar impulse arose in Northern Europe, inspired by Rudolf Steiner’s concept of the Threefold Social Organism. In the late 1970s, biodynamic farmers Jan Vander Tuin (from Switzerland) and Trauger Groh (from Germany) each started biodynamic farms in the US, operating under what Vander Tuin called Community-Supported Agriculture. The CSA movement has been one of the fastest-growing economic and social models used by small farmers ever since.