Culver, W. C., y C. Reinhart. «The Douglas Report: Chilean Mining and Its Political Representation in 1871». Si Somos Americanos. Revista De Estudios Transfronterizos, Vol. 4, n.º 3, abril de 2018, pp. 79-102, https://sisomosamericanos.cl/index.php/sisomosamericanos/article/view/795.