File contains correspondence with Claude Gregory, John Dodge, F. Weizsacker, Jean R. de Salis, John Kendrew, P. Kapitza, Salvatore Quasimodo, Daniele Bovet, Georg Likacs, D. Lavergne, Linus Pauling, S. Radhakrishnan, C.F. Weizsacker, Werner Heisenberg, Robert Forbes, Robert Hutchins, and Theodor Svedberg. Correspondence mainly includes invitations to join the Encyclopedia Universalis' project. Also includes comments written about the encyclopedia by Marcello Colocci (on the "Physics" and "Chemistry" pieces) and Guiseppe Barbreri (on the "Geography" section). Contains English, Italian, and German correspondence.

File contains correspondence with A. Papadopoulos, Renate Platzoder, and Ambassador Arpad Prandler of Hungary. Correspondence concerns the International Ocean Institute (IOI)'s training programme, Pacem in Maribus, and other topics.