Portrait of French engineer <a href="https://en.wikipedia.org/wiki/Pierre_Girard" class="extiw" title="en:Pierre Girard">Pierre-Simon Girard</a> (1765-1835)
Julien Léopold Boilly (1796-1874)
<a rel="nofollow" class="external autonumber" href="http://www.sil.si.edu/digitalcollections/hst/scientific-identity/CF/display_results.cfm?alpha_sort=g">[1]</a>