<bdi><a href="https://en.wikipedia.org/wiki/en:Caspar_David_Friedrich" class="extiw" title="w:en:Caspar David Friedrich"><span title="German painter">Caspar David Friedrich</span></a>
</bdi>
circa 1818/1819
1. Unknown source<span style="display: none;">Unknown source</span><br>2. <a rel="nofollow" class="external text" href="http://paintingdb.com/view/8132">PaintingDb, Object 8132</a>