<bdi><a href="https://en.wikipedia.org/wiki/en:Gustav_Jahn" class="extiw" title="w:en:Gustav Jahn"><span title="Austrian painter and mountaineer (1879-1919)">Gustav Jahn</span></a>
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<a rel="nofollow" class="external text" href="http://www.arcadja.com/auctions/en/private/jahn_gustav/artworks/14466/0/">Palais Dorotheum, Nov 8, 2012, lot 299 via ARCADJA auction results</a>