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Unknown artist<span style="display: none;">Unknown artist</span></div>
Homepage der Moriz und Elsa von Kuffner-Stiftung; Source: <a rel="nofollow" class="external autonumber" href="http://www.kuffner.ch/geschichte.html">[1]</a>; Image: <a rel="nofollow" class="external autonumber" href="http://www.kuffner.ch/img/morizvonkuffner_big.jpg">[2]</a>