Travel and Exploration: Henry M. Stanley, "In Darkest Africa" (Charles Scribner’s Sons, 1890). Munro Park, "Travels in the Interior Districts of Africa: Performed under the Direction and Patronage of the Africa Association, in the Years 1795, 1796, & 1797" (W. Bulmer & Co., 1810, sixth edition). David Livingstone, "Missionary Travels and researches in South Africa" (Harper, 1858).
