Alfred Dolman (1827-1851). Heads of four types of rhinoceros: Borhili, Keitloa, Quababa, Mohohu. From p.187 in Dolman, A., 1924. In the footsteps of Livingstone. London. — This image is illustrated and placed in historical context in Rookmaaker, 2008. Encounters with the African Rhinoceros, fig. 98
