by John Watkins, albumen carte-de-visite,
<bdi><a href="https://en.wikipedia.org/wiki/en:John_Watkins_(photographer)" class="extiw" title="w:en:John Watkins (photographer)"><span title="English photographer">John Watkins</span></a>
</bdi>
<a rel="nofollow" class="external free" href="http://www.npg.org.uk/collections/search/portrait/mw111920/Richard-Westmacott">http://www.npg.org.uk/collections/search/portrait/mw111920/Richard-Westmacott</a>