Subjects: “…., Katayama, Sen., Kautsky, Karl., Knudsen, P., Kol, Henri Hubert van., Luxemburg, Rosa., Molkenbuhr, Hermann., Pfannkuch, W., Plechanov, Georgij Valentinovič., Rosenfeld, Kurt., Stadthagen, Arthur., Troelstra, Pieter Jelles., Zetkin, Clara., Second International., Group portrait.]…”

Subjects: “…[Hyndman, Henry Mayers., Kautsky, Karl., Fischer, Richard., Troelstra, Pieter Jelles., Asken, J.B., Zetkin, Clara., Rosenfeld, Kurt., Pfannkuch, W., Molkenbuhr, Hermann., Katayama, Sen., Plechanov, Georgij Valentinovič., Kol, Henri Hubert van., Knudsen, P., Frank, Ludwig., Stadthagen, Arthur., Herzfeld, Joseph., Bax, Ernest Belfort., Luxemburg, Rosa., Bebel, August., Jaurès, Jean., Second International., Group portrait.]…”

Subjects: “…., Katayama, Sen., Kautsky, Karl., Knudsen, P., Kol, Henri Hubert van., Kringen, Olav., Longuet, Jean., Luxemburg, Rosa., Naoroji, Dadabhai., Němec, Antonín., Plechanov, Georgij Valentinovič., Soukup, František A., Troelstra, Pieter Jelles., Ugarte, Manuel., Vaillant, Marie-Edouard., Vandervelde, Emile., Walecki, Henryk., Second International., Group portrait.]…”

Subjects: “…., Katayama, Sen., Kautsky, Karl., Knudsen, P., Kol, Henri Hubert van., Kringen, Olav., Longuet, Jean., Luxemburg, Rosa., Naoroji, Dadabhai., Němec, Antonín., Plechanov, Georgij Valentinovič., Soukup, František A., Troelstra, Pieter Jelles., Ugarte, Manuel., Vaillant, Marie-Edouard., Vandervelde, Emile., Walecki, Henryk., Second International., Group portrait.]…”