<p><i>Encampment at Toong-koo, where Captain Elliot met Keshen.</i>
</p>
The caption in Ouchterlony's book may be erroneous in the place name. Elliot and Keshen are known to have met at the Bogue (Humen) forts in the Pearl River estuary. The background appears to resemble a fort. Toong-koo (modern-day Lung Kwu Chau) is located much further south at the mouth of the estuary.
"Drawn on wood by E. T. Wigan", p. xviii
published 1844
John Ouchterlony (1844). <i><a rel="nofollow" class="external text" href="https://archive.org/stream/chinesewaraccoun00ouchrich#page/72">The Chinese War</a></i>. London: Saunders and Otley. p. 64.