<a href="https://en.wikipedia.org/wiki/Aida_(horse)" class="extiw" title="w:Aida (horse)">Aida</a>, winner of the 1901 <a href="https://en.wikipedia.org/wiki/1000_Guineas_Stakes" class="extiw" title="w:1000 Guineas Stakes">1000 Guineas</a>.
Uncredited photographer
Illustrated Sporting &amp; Dramatic News, 11 May 1901, pg. 406.