“Rev. Dr. Thomas Chalmers” by Hill and Adamson (British, active 1843–1848), David Octavius Hill (British, Perth, Scotland 1802–1870 Edinburgh, Scotland), Robert Adamson (British, St. Andrews, Scotland 1821–1848 St. Andrews, Scotland) via The Metropolitan Museum of Art is licensed under CC0 1.0
<bdi><a href="https://en.wikipedia.org/wiki/en:David_Octavius_Hill" class="extiw" title="w:en:David Octavius Hill"><span title="Scottish painter and photographer (1802-1870)">David Octavius Hill</span></a>
</bdi>
circa 1843 <div style="display: none;">date QS:P571,+1843-00-00T00:00:00Z/9,P1480,Q5727902</div>
<a rel="nofollow" class="external text" href="https://www.metmuseum.org/art/collection/search/282017">Metropolitan Museum of Art, online collection (The Met object ID 282017)</a>