An etching of <a href="https://en.wikipedia.org/wiki/Pedra_Branca" class="extiw" title="w:Pedra Branca">Pedra Branca</a> before the building of <a href="https://en.wikipedia.org/wiki/Horsburgh_Lighthouse" class="extiw" title="w:Horsburgh Lighthouse">Horsburgh Lighthouse</a>, with dark storm clouds in the background. The caption of the image is "Pedra Branca, Straits of Malacca".
<a href="https://en.wikipedia.org/wiki/Thomas_Daniell" class="extiw" title="w:Thomas Daniell">Thomas Daniell</a> (1749–1840) and <a href="https://en.wikipedia.org/wiki/William_Daniell" class="extiw" title="w:William Daniell">William Daniell</a> (1769–1837).
circa 1820 <div style="display: none;">date QS:P,+1820-00-00T00:00:00Z/9,P1480,Q5727902</div>
<a rel="nofollow" class="external free" href="http://www.mfa.gov.sg/pedrabranca/multimediagallery/HorsburghLighthouse(SingaporeMemorial).html">http://www.mfa.gov.sg/pedrabranca/multimediagallery/HorsburghLighthouse(SingaporeMemorial).html</a>.