1899 May Day rally in <a href="//commons.wikimedia.org/wiki/Stockholm" title="Stockholm">Stockholm</a>, <a href="//commons.wikimedia.org/wiki/Sweden" class="mw-redirect" title="Sweden">Sweden</a>
<bdi><a href="https://www.wikidata.org/wiki/Q35302976" class="extiw" title="d:Q35302976"><span title="Finnish photographer">Carl Konstantin Thorncliff</span></a>
</bdi>
Taken on 1 May 1899
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