| Description | Invitations to symposia and lectures, publications, enquiries for work in Katz's department, refereeing of papers, research queries. Includes recommendations. Correspondents include E Gutmann, Cornelis Wiersma, Teh-Pei Feng, Peter O Bishop, Yasuji Katsuki, Graham Hoyle, Talbot H Waterman, Harry Grundfest, Eduardo De Robertis, P Glees |