"Portuguese Slavery and British Responsability. Memorandum adressed to the Right Hon. Sir Edward Grey, K.G., M.P., P.C., etc., His Majesty's Principal Secretary os State for Foreign Affairs". Ed. Anti-Slavery and Aborigines Protecti...
Panfleto reproduzindo excertos de "Parliamentary Papers: Portuguese Slavery and British Responsibility". Ed. Anti-Slavery and Aborigines Protection Society. London: Offices of the Society, 51, Denison House, 1912.
"Slavery in West Africa. Portuguese Revelations". Translated from a Pamphlet published last year [1912] by Senhor Jeronimo Paiva de Carvalho, formerly Curator on the Island of Principe. Ed. Anti-Slavery and Aborigines Protection Society....