Photograph of <a href="//commons.wikimedia.org/wiki/Albert_Einstein" title="Albert Einstein">Albert Einstein</a> in his office at the University of Berlin, published in the USA in 1920.
Unknown photographer
circa 1920 <div style="display: none;">date QS:P,+1920-00-00T00:00:00Z/9,P1480,Q5727902</div>
<a rel="nofollow" class="external text" href="https://archive.org/details/scientificmonth03sciegoog">"The Solar Eclipse of May 29, 1919, and the Einstein Effect," <i>The Scientific Monthly</i> 10:4 (1920), 418-422, on p. 418</a> and <a rel="nofollow" class="external text" href="https://doi.org/10.3932/ethz-a-000055922">ETH-Archiv</a>