Correspondents include: Dr Fritz-Helmut Ullerich; Miss Edith von Ullmann; Prof Otto Ullrich; Prof Hans Ulrich; Prof W Ulrich; Umschau in Wissenschaft und Technik, Dr D Heinemann; Dr Erik Undritz; UNESCO: A Perez-Victoria, Department of Advancement of Science, Dr Guy S Metraux, International Commission for a Scientific and Cultural History of Mankind, A Metraux, Department of Social Sciences; United Hospitals' Jewish Society, J Ziment; T Upendra; USA visit on Fulbright Travel Grant: correspondence with Conference Board of Associated Research Councils Committee on International Exchange of Persons, Francis A Young, Elizabeth P Lam, United Stated Education Commission in the United Kingdom, Babette Eaton, Monica Powell, Ruth M Webb, The Foreign Service of the USA, Science Office, Prof Hans T Clarke; US Public Health Service, Dr Frederick L Stone; Urania-Verlag GMBH Jena, J A Wedekind