Gustav Hellmann (1854–1939), german meteorologist and climatologist
<bdi><a href="https://en.wikipedia.org/wiki/en:Rudolf_D%C3%BChrkoop" class="extiw" title="w:en:Rudolf Dührkoop"><span title="German photographer (1848-1918)">Rudolf Dührkoop</span></a>
</bdi>
circa 1905 <div style="display: none;">date QS:P,+1905-00-00T00:00:00Z/9,P1480,Q5727902</div>
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