Subjects: “…[Engels, Friedrich.]…”

Subjects: “…[Marx, Karl., Engels, Friedrich., Aveling-Marx, Eleanor., Lafargue-Marx, Laura., Longuet-Marx, Jenny., Manuscript., Portrait., Group portrait.]…”

Subjects: “…., Pfau, Ludwig., Engels, Friedrich., Herwegh, Georg., Heine, Heinrich., Morris, William., Lassalle, Ferdinand., Shelley, Percy Bysshe., Pestalozzi, Johann Heinrich., Börne, Ludwig., Marx, Karl., Jacoby, Johann., Portrait.]…”

Subjects: “…., Duc Quercy, Albert., Engels, Friedrich., Guesde, Jules., Iglesias Posse, Pablo., Lafargue, Paul., Lavrov, Petr Lavrovič., Liebknecht, Wilhelm., Malon, Benoît., Mendelson, Stanisław., Vaillant, Édouard-Marie., Portrait.]…”

Subjects: “…., Luxemburg, Rosa., Engels, Friedrich., Bakunin, Michail Aleksandrovič., Sartre, Jean-Paul., Kropotkin, Petr Alekseevič., Russell, Bertrand., Marcuse, Herbert., Gramsci, Antonio., Plechanov, Georgij Valentinovič., Bloch, Ernst., Caricature.]…”