Biegański, Władysław (1857–1917)

Czarnowski, Stefan (1879–1937)

Czarnowski, Stefan (1879–1937)

Bragg, William Henry (1862–1942)

Draper, John William (1811–1882)

Draper, John William (1811–1882)

Cousin, Victor (1792–1867)

Hafner, Falik ( -1942?)

Bączek, Jan (1881–1942)

Hertzówna, Amelia (1878–1942)

Bursche, Edmund (1881–1940)

Kempner, Stanisław Aleksander (1857–1924)

Kautsky, Karl (1854–1938)

Domański, Juliusz (1927– )

Ochorowicz, Julian (1850–1917)

Giraud-Teulon, Alexis (1839–1916)

Lafargue, Paul (1842–1911)

Kropotkin, Petr Alekseevič (1842–1921)

Jaurès, Jean (1859–1914) Lafargue, Paul (1842–1911)

Hoszowski, Justyn (c. 1850 – 1908)

Laveleye, Emile de (1822–1892)

Lebon, Ernest (1846–1922)

Kovalevskij, Maksim Maksimovič (1851–1916)

Kulczycki, Ludwik (1866–1941)

Klimke, Friedrich August (1878–1924)