<bdi><a href="https://en.wikipedia.org/wiki/en:Paul_Baum_(artist)" class="extiw" title="w:en:Paul Baum (artist)"><span title="German painter (1859-1932)">Paul Baum</span></a>
</bdi>
1906<div style="display: none;">date QS:P571,+1906-00-00T00:00:00Z/9</div>
<a href="https://en.wikipedia.org/wiki/Christie%27s" class="extiw" title="en:Christie's">Christie's</a>, LotFinder:  entry  <a rel="nofollow" class="external text" href="https://www.christies.com/LotFinder/lot_details.aspx?intObjectID=5580592">5580592</a> (sale 5472, lot 439, London, 21 June 2012, page no more available)