- FundosAD1715 - South African Institute of Race Relations (SAIRR), Records
- Séries23 - BLACK POLITICS
- Subsérie23.11 - R.F. Margo - Report to the Ford Foundation: Black Organization in South Africa
- Parte R.F. Margo - Report to the Ford Foundation: Black Organization in South Africa
- Parte R.F. Margo - Report to the Ford Foundation: Black Organization in South Africa
- Parte R.F. Margo - Report to the Ford Foundation: Black Organization in South Africa
- Parte R.F. Margo - Report to the Ford Foundation: Black Organization in South Africa