1. Archival
2. BA (Barlow Archives, Johannesburg) , Archives of the Central Mining and Investment Corporation Ltd , Letter Book Dec. 1917 to May 1924 containing letters from Sir Evelyn Wallers and Frank Phillips .
3. CAD (Central Archives Depot of the National Archives, Pretoria) , K4 [Unpublished Minutes of the Martial Law Commission, 1922] .
4. GG (Archives of the Governor General of South Africa, 1905–1974) , National Archives, Pretoria , Vol. 966 , File 19/650 .
5. GNLB (Papers of the Government Native Labour Bureau) , National Archives, Pretoria , Vol. 311 , File No. 125/19/48 (‘Manuscript papers – reports from Inspectors etc. during the Strike, 1922’) .