<bdi><a href="https://www.wikidata.org/wiki/Q1037668" class="extiw" title="d:Q1037668"><span title="German landscape painter, born 1847">Carl Ernst Morgenstern</span></a>
</bdi>
<a rel="nofollow" class="external text" href="http://www.auktion-bergmann.de/ufItemInfo.aspx?a_id=101&amp;i_id=293866&amp;text=Wolf&amp;Katno=0&amp;All=1">Auktionshaus Bergmann, 26 March 2011, lot 158</a>