Correspondence with potential users of the Northern Hemisphere Observatory and arrangements for meetings. The correspondents are D.W.N. Stibbs; H.A. Brück; R. Wilson and D. McNally, University of London Observatory; J. Ring; J.D. McGee and B.C. Morgan, Imperial College of Science and Technology; Mrs M. Burbidge and A. Hunter, Royal Greenwich Observatory; Z. Kopal, University of Manchester; A.J. Meadows, University of Leicester; and Dr Vesecky, University of Leicester.