Albert Grundlingh, The Dynamics of Treason: Boer Collaboration in the South African War of 1899-1902 Protea Book House, Pretoria, 2006: Shifty Burghers ñ Hensoppers and Joiners in the Orange Free State and the Transvaal. (2021). Historia, 52(2). https://upjournals.up.ac.za/index.php/historia/article/view/1208