Prehistoric Rhodesia; an examination of the historical, ethnological and archaeological evidencesas to the origin and age of the rock mines and stone buildings, with a gazetteer of mediaeval south -east Africa, 915 A.D. to 1760 A.D., and the countries of the Monomotapa, Manica, Sabia, Quiteve, Sofala, and Mozambique (1909)
Hall, R. N, (Richard Nicklin. 1853-1914 · London [etc.] T.F. Unwin · leaf 313
Randall-MacIver, David, 1873-1945
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.