*G.M. Theal: _History and Ethnography of South Africa of the Zambesi to
1795_, 3 vols., 1907-10.
---- _History of South Africa since September, 1795_, 5 vols., 1908.
---- _Records of South Eastern Africa_, 9 vols., 1898-1903.
*J. Bryce: _Impressions of South Africa_, 1897.