<bdi><a href="https://en.wikipedia.org/wiki/en:Carl_Spitzweg" class="extiw" title="w:en:Carl Spitzweg"><span title="German painter (1808-1885)">Carl Spitzweg</span></a>
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<a rel="nofollow" class="external text" href="http://www.sothebys.com/en/auctions/ecatalogue/2012/important-old-master-paintings-n08825/lot.84.html">Sotheby's New York, 26 January 2012, lot 84</a>