<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>
1. Unknown source<span style="display: none;">Unknown source</span><br>2. <a href="https://en.wikipedia.org/wiki/en:Bridgeman_Art_Library" class="extiw" title="w:en:Bridgeman Art Library"><span title="library">Bridgeman Art Library</span></a>:  Object <a rel="nofollow" class="external text" href="https://www.bridgemanimages.co.uk/en/asset/141323">141323</a><br>