Gert Mattenklott, Manfred Herzer, and <a href="https://en.wikipedia.org/wiki/Hubert_Kennedy" class="extiw" title="en:Hubert Kennedy">Hubert Kennedy</a> (from left to right) at the "Among Men, Among Women" conference at the University of Amsterdam in June 1983
Photo: <a href="//commons.wikimedia.org/wiki/User:Jdsteakley" title="User:Jdsteakley">James Steakley</a>
CC BY-SA 4.0
<span class="int-own-work">Self-photographed</span>