International Symposium on Algebraic Geometry, held in Rome in 1965. <a href="https://en.wikipedia.org/wiki/Vittorio_Dalla_Volta" class="extiw" title="en:Vittorio Dalla Volta">Vittorio Dalla Volta</a>
Photographic studio "Reporters Foto", Rome
Scanned by Daniele Tampieri from the original photo, owned by <a href="https://en.wikipedia.org/wiki/Giovanni_Battista_Rizza" class="extiw" title="en:Giovanni Battista Rizza">Giovanni Battista Rizza</a>. (<a href="//commons.wikimedia.org/wiki/File:1965_International_Algebraic_Geometry_Symposium.jpg" title="File:1965 International Algebraic Geometry Symposium.jpg">original photo</a>)