<bdi><a href="https://en.wikipedia.org/wiki/en:Nicholas_Roerich" class="extiw" title="w:en:Nicholas Roerich"><span title="Russian painter, writer, archaeologist and philosopher (1874–1947)">Nicholas Roerich</span></a>
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<a rel="nofollow" class="external text" href="http://www.arcadja.com/auctions/de/private/roerich_nicolaj_konstantinov/kunstwerken/24729/0/?rvn=4">MacDougall's, London, 29.11.2018, lot 9 via Arcadja auction results</a>