1. TEBA. 1919a. “Chamber of Mines Finance Committee Minutes, February, 15 1919.” University of Johannesburg Special Collections, TEBA NRC File 64A.
2. TEBA. 1919b. “Board of Management.” University of Johannesburg Special Collections, TEBA NRC File 31.
3. TEBA. 1920a. “Chamber of Mines Finance Committee Minutes, January 23, 1920.” University of Johannesburg Special Collections, TEBA NRC File 64A.
4. TEBA. 1920b. “Chamber of Mines Finance Committee Minutes, April 16, 1920.” University of Johannesburg Special Collections, TEBA NRC File 64A
5. TEBA. 1948. “Umteteli, Warden Memorandum, July 1940.” TEBA NRC File P6.