The back of a Stollwerck card from 1908, distributed with chocolate, describing Johannes Kepler. For the front, see Image:Kepler Stollwerck card.jpg. Scanned...
card measures about 2 inches by 3.75 inches. See also Image:Kepler Stollwerck card back.jpg. Scanned by the uploader. https://creativecommons.org/publicdomain/mark/1...
