Colloquium on the concept of law (Paris, 27-31 July 1953): correspondence with UNESCO, final report, minutes, preparatory texts of the participants (Djordjevic, Matsudaira, I.I. Morris, Q. Martin, Mirkine-Guetzevitch, McKeon, Mahmassani, Geiger; Schneider)
Correspondence with the Federation of Documentation (Index bibliographicus) (1955-1956). Correspondence with international bibliographic companies, especially those published under the auspices of ICPHS (1957-1958)
Dictionaries: UNESCO contract (CA2/99b/1, 4 March 1964) for a Handbook of Lexicography, correspondence with UNESCO and Professor Ladislas Zgusta (1963-1966)
CISS/ICPHS contract for a symposium (Communication and the individual in contemporary society, 17-20 April 1972, Rome): minutes, contract, correspondence and financial reports sent to UNESCO, correspondence with participants, programme, original texts, correspondence with CISS, final report and preparatory texts of participants
UENSCO contract with ICSU-CISS-International Union of Psychological Sciences-ICPHS for a study on the socio-cultural consequences of the technological development of micro-computers: correspondence (1984-1985) with the contractors, report by René Berger
UNESCO contract with CISS-ICSU-CIOMS-ICPHS: organisation of a meeting on the Effects of recent technological progress, -particularly in the fields of brain research, neurophysiology, biological experimentation, genetic manipulation and drug use-, on human rights (Barcelona, 25-28 March 1985). Correspondence with participants (1984-1985), texts of interventions
UNESCO contract for a study on the theme "Brancusi: a classicism of exoticism": contract 640292 of 3 February 1982, correspondence on its cancellation (1983)