1951 7th Hoernlé lecture H J van Eck, Some aspects of the South African industrial revolution compressed.pdf
1952 8th Hoernlé lecture S Herbert Frankel, Some reflections on civilization in Africa compressed.pdf
1966 20th Hoernlé lecture G M Carter, Separate development - The challenge of the Transkei compressed.pdf
1970 22nd Hoernlé lecture D H Houghton, Enlightened self-interests and the liberal spirit compressed.pdf
1971 23rd Hoernlé lecture A S Mathews, Freedom and state security in the South African plural society compressed.pdf