<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>
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Fine Museums of San Francisco <a rel="nofollow" class="external autonumber" href="http://www.google.de/imgres?imgurl=http://www.famsf.org/imagebase2-200/315420130163/images/3154201301630006.jpg&amp;imgrefurl=http://search3.famsf.org:8080/view.shtml%3Fkeywords%3DEarth%26artist%3D%26country%3D%26period%3D%26sort%3D%26start%3D71%26position%3D72%26record%3D33479&amp;usg=__1p_q03AN4ecxd1gLhtjNPbiM2kg=&amp;h=200&amp;w=200&amp;sz=12&amp;hl=de&amp;start=1&amp;tbnid=lHaAsdmVnglSWM:&amp;tbnh=104&amp;tbnw=104&amp;prev=/images%3Fq%3D%2522Perham%2BW.%2BNahl%2522%26hl%3Dde%26rlz%3D1B2GGGL_de___DE203%26sa%3DG">[1]</a>