- FondsA1 - Papers of Jan Hendrik Hofmeyr
- SeriesF - Publications and Unpublished Writings of J.H. Hofmeyr
- SubseriesFa - "Onze Jan"
- sub-subseriesFa3 - Research Material
- sub-subsubseriesFa3.4 - Onze Jan's Correspondence
- FileFa3.4.1 - Original Letters
- FileFa3.4.2 - Copies of Letters