<bdi><a href="https://www.wikidata.org/wiki/Q30311670" class="extiw" title="d:Q30311670"><span title="Swiss artist (1787-1857)">Johann Heinrich Bleuler Jr.</span></a>
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<a rel="nofollow" class="external text" href="http://www.helveticarchives.ch/detail.aspx?ID=477310">helveticarchives.ch</a>; Swiss National Library, Prints and Drawings Department