<bdi><a href="https://en.wikipedia.org/wiki/en:Karol_D._Witkowski" class="extiw" title="w:en:Karol D. Witkowski"><span title="Polish-American artist">Karl Witkowski</span></a>
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<a rel="nofollow" class="external text" href="http://www.bonhams.com/auctions/15871/lot/1151/">Bonhams San Francisco, 13 Jan 2008, lot 1151</a>