Lithograph by I. W. Tegner &amp; Kittendorff after a photograph by Carl Joh. Hanssen.
<bdi><a href="https://www.wikidata.org/wiki/Q42559251" class="extiw" title="d:Q42559251"><span title="Norwegian photographer">Rune Aakvik</span></a>
</bdi>
CC BY 4.0
Oslo Museum: image no. <a rel="nofollow" class="external text" href="http://www.digitaltmuseum.no/things/021047437447/OMU/OB.02312">OB.02312</a>, via digitaltmuseum.no.