<i>Marche aux Negres</i>, engraved by Deroi, 1827-35, after painting by Johann Moritz Rugendas (information per <a rel="nofollow" class="external autonumber" href="http://www.gettyimages.co.uk/detail/illustration/marche-aux-negres-engraved-by-deroi-1827-35-stock-graphic/74213589">[1]</a>)
<bdi><a href="https://www.wikidata.org/wiki/Q3155319" class="extiw" title="d:Q3155319"><span title="French painter and lithographer (1797-1886)">Isidore Laurent Deroy</span></a>
</bdi>
Self-scanned from 《社会历史博物馆》 <a href="//commons.wikimedia.org/wiki/Special:BookSources/7-5347-1397-8" title="Special:BookSources/7-5347-1397-8">ISBN 7-5347-1397-8</a> 18世纪巴西的奴隶贩卖