<bdi><a href="https://en.wikipedia.org/wiki/en:Carl_Blechen" class="extiw" title="w:en:Carl Blechen"><span title="German painter (1798-1840)">Carl Blechen</span></a>
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<p>1. <a rel="nofollow" class="external text" href="http://amica.davidrumsey.com/luna/servlet/detail/AMICO~1~1~6203~92928">The AMICA Library</a>
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2./3. <a href="https://en.wikipedia.org/wiki/en:Art_Institute_of_Chicago" class="extiw" title="w:en:Art Institute of Chicago"><span title="art museum and school in Chicago, United States">Art Institute of Chicago</span></a>:  online database:  entry  <a rel="nofollow" class="external text" href="https://www.artic.edu/artworks/144969?search_id=1">144969</a>