Joseph Hansen
- Pablo 'Answers' the Open Letter · Fourth International, vol. 2 no. 1, Summer 1965
- Report on the Third World Congress of the Fourth International since re-unification · Fourth International, vol. 6 no. 2, Winter 1969–70
- Assessment of the Draft Resolution on Latin America · Fourth International, vol. 6 no. 2, Winter 1969–70
- The Differences between the Two Documents on the 'Cultural Revolution' · Fourth International, vol. 6 no. 2, Winter 1969–70