1974; 1978-1979
Letter from Abraham Karpas' Secretary to Sydney Brenner, 30/04/1974
Letter from Frank Hayhoe to Sydney Brenner, 28/11/1978
Letter from G. D. Birnie to Frank Hayhoe, 23/11/1978
Letter from Peter Humphries to Abraham Karpas, 10/11/1978
Letter from Sydney Brenner to Frank Hayhoe, 31/01/1979
Letter from Sydney Brenner's Secretary, S. M. Wilby, to Frank Hayhoe, 29/11/1978
Reprint from The Lancet: New Virus Expressed in Cultured Human Leukaemic Myelobasts, by Abraham Karpas, 8/7/1978
Transformation of Normal Bone-Marrow Cells By A Leukaemic Cell Line Associated With A Presumptive New Human Virus, by Abraham Karpas, 11/11/1978