Back Row — Van Kol, Ugarte, Nemec, Vaillant, Soukup, Rosa Luxemburg, Adler, Bracke, Kautsky, Walecki, Vandervelde, Cambier, Longuet,
Anseele, Ferri.

Front Row– Cypriani, Troelstra, Hyndman, Bax, Kringen, Katayama, Plechanoff, Knudsen, Hillquit, Navroji.