- FondsAD1715 - South African Institute of Race Relations (SAIRR), Records
- Series13 - LABOUR
- Subseries13.9 - The Negro Workers
- File13.9.10 - The Negro Worker. On the fifth congress of the R.I.L.U. Special number
- ItemThe Negro Worker. On the fifth congress of the R.I.L.U. Special number
- ItemThe Negro Worker. On the fifth congress of the R.I.L.U. Special number
- ItemThe Negro Worker. On the fifth congress of the R.I.L.U. Special number
- ItemThe Negro Worker. On the fifth congress of the R.I.L.U. Special number