<a href="//commons.wikimedia.org/wiki/Category:Albert_Ballin" title="Category:Albert Ballin">Albert Ballin</a>, 1913
Photographer not credited
<a rel="nofollow" class="external text" href="https://archive.org/stream/menaroundkaiserm00wilerich/menaroundkaiserm00wilerich#page/n32/mode/1up">Frederic William Wile: Men around the Kaiser (1913)</a>