- FondsA2618 - Robert Sobukwe Papers
- SeriesC - Research Material
- SubseriesCr - Letters from AP Mda and 'Tsepo' to GM Pitje and 'Son of Africa'
- FileCr1 - AP Mda: Letter to GM Pitje
- FileCr2 - AP Mda: Letter to GM Pitje
- FileCr3 - AP Mda: Letter to J Matthews
- FileCr4 - AP Mda: Letter to "My dear brother"
- FileCr5 - AP Mda: Letter to GM Pitje
- FileCr6 - AP Mda: Notice to the Provincial League of the Congress Youth League of South Africa
- FileCr7 - AP Mda: Letter to "Dear Son of Africa"
- FileCr8 - AP Mda: Letter to "Son of Africa"