<bdi><a href="https://en.wikipedia.org/wiki/en:Perham_Wilhelm_Nahl" class="extiw" title="w:en:Perham Wilhelm Nahl"><span title="American printmaker, painter, illustrator and an arts educator (1869-1935)">Perham Wilhelm Nahl</span></a>
</bdi>
Artnet - Online auctions, artists &amp; galleries <a rel="nofollow" class="external autonumber" href="http://www.artnet.de/Artists/LotDetailPage.aspx?lot_id=A3515118607A81CB">[1]</a>