Portrait of Camille Jordan, from 1889 to 1922.
<bdi><a href="https://en.wikipedia.org/wiki/en:Eug%C3%A8ne_Pirou" class="extiw" title="w:en:Eugène Pirou"><span title="French photographer and filmmaker (1841-1909)">Eugène Pirou</span></a>
</bdi>
Archivio storico dell'Accademia delle Scienze - <a rel="nofollow" class="external text" href="https://www.accademiadellescienze.it/accademia/soci/Camille-Jordan">Catalogo digitale</a>