Daguerreotype featuring (left to right): Theodore Lyman (1833-1897), Alexander Agassiz (1835-1910), and Jacques Burkhardt, (d. 1867). <a rel="nofollow" class="external text" href="http://via.lib.harvard.edu/via/deliver/deepLink?_collection=via&amp;recordId=olvwork355223">sAg 168.70.1</a>, Ernst Mayr Library of the Museum of Comparative Zoology, Harvard University
<div class="fn value">
Photographer unidentified</div>
circa 1860 <div style="display: none;">date QS:P571,+1860-00-00T00:00:00Z/9,P1480,Q5727902</div>
<a rel="nofollow" class="external text" href="http://via.lib.harvard.edu/via/deliver/deepLink?_collection=via&amp;recordId=olvwork355223">sAg 168.70.1</a>, Ernst Mayr Library of the Museum of Comparative Zoology, Harvard University