Portrait of Daniel Garrison Brinton. Original owned by the American Philosophical Society.
<bdi><a href="https://en.wikipedia.org/wiki/en:Thomas_Eakins" class="extiw" title="w:en:Thomas Eakins"><span title="American painter (1844-1916)">Thomas Eakins</span></a>
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<a rel="nofollow" class="external text" href="http://siris-artinventories.si.edu/ipac20/ipac.jsp?uri=full=3100001~!70183!0">Smithsonian American Art Museum, Art Invetories Catalog</a>