“Mutual aid: a factor of evolution”, by P. Kropotkin (1904) https://archive.org/details/mutualaidfactoro00kropiala/mode/2up
“La grande rivoluzione, 1789-1793”, di P. Kropotkin (1911, due volumi in unico file) https://archive.org/details/lagranderivoluzi00krop/mode/2up