<bdi><a href="https://www.wikidata.org/wiki/Q2645216" class="extiw" title="d:Q2645216"><span title="Danish marine painter and professor at the Hamburg School of Applied Arts">Alfred Jensen</span></a>
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1. <a rel="nofollow" class="external text" href="http://www.kunstauktionen-duesseldorf.de/en/katalogdetails/4/245/2">Hargesheimer Kunstauktionen Düsseldorf, 12. September 2009, lot 250</a><br>2. <a rel="nofollow" class="external text" href="http://www.arcadja.com/auctions/de/private/jensen_alfred/kunstwerken/14640/0/?rvn=3">Hargesheimer Kunstauktionen Düsseldorf, 12. September 2009, lot 250 via ARCADJA auction results</a>