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<a href="//commons.wikimedia.org/wiki/Category:Theodor_Ohlsen" title="Category:Theodor Ohlsen"><b>Theodor Ohlsen</b> (1855–1909)</a></div>
Unknown date<div style="display: none;">Unknown date</div>
<a rel="nofollow" class="external text" href="http://www.dorotheum.com/auktion-detail/auktion-9943-osterauktion-kunst-und-antiquitaten/lot-1473549-theodor-olsen.html?no_cache=1&amp;img=0&amp;cHash=5d5dd70050db6e234ca5e34184e4414b">Palais Dorotheum 26.03.2013 - Vienne</a>