<bdi><a href="https://en.wikipedia.org/wiki/en:Johann_K%C3%B6ler" class="extiw" title="w:en:Johann Köler"><span title="Estonian artist (1826-1899)">Johann Köler</span></a>
</bdi>
<a rel="nofollow" class="external free" href="http://www.shifara-antique.ee/est-rariteedid/id-2142-koeler-johann-1821-1899-vuerst-gortsakovi-portree-1867-rariteet">http://www.shifara-antique.ee/est-rariteedid/id-2142-koeler-johann-1821-1899-vuerst-gortsakovi-portree-1867-rariteet</a>