Lithograph after photograph.
<bdi><a href="https://www.wikidata.org/wiki/Q17356104" class="extiw" title="d:Q17356104">The Municipal Archives of Trondheim</a>
</bdi>
CC BY 2.0
<a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a>: <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/trondheim_byarkiv/7859299524/">Fritz Thaulow (1847 - 1906)</a>