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Details from two pictures by Joseph Wright of Derby: <i>An Experiment on a Bird in the Air Pump</i> and <i>Mr and Mrs Thomas Coltman</i></div>
<bdi><a href="https://en.wikipedia.org/wiki/en:Joseph_Wright_of_Derby" class="extiw" title="w:en:Joseph Wright of Derby"><span title="18th-century British painter (1734-1797)">Joseph Wright of Derby</span></a>
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Scans from <i>Joseph Wright of Derby</i> 1968