<a href="https://en.wikipedia.org/wiki/Patrick_Blackett,_Baron_Blackett" class="extiw" title="w:Patrick Blackett, Baron Blackett">Patrick Blackett, Baron Blackett</a>, ca. 1950
<a href="https://en.wikipedia.org/wiki/User:Sosayso" class="extiw" title="wikipedia:User:Sosayso">Sosayso</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>
22 March 2008 (original upload date)
<span class="int-own-work" lang="en">Own work</span>