J. I. Rodale founded Rodale Inc., in 1930. He was a partner with his brother, Joseph, in Rodale Manufacturing, which produced electrical switches. Joseph moved Rodale Manufacturing to Emmaus, Pennsylvania to take advantage of favorable local taxes, while J. I. dabbled in publishing. In 1942, Rodale started "Organic Farming and Gardening" magazine. It taught people how to grow food with organic farming techniques. Today, "Organic Gardening" is the best-read gardening magazine in the world. In 1950, Rodale introduced "Prevention", a health magazine.