Workshop on Mechanisms and prospects of Genetic Exchange, Berlin, 11-13 Dec 1971. Correspondence, programmes, manuscript notes and associated papers including photographs of a dinner party. With manuscript and typescript drafts of transcripts of Workshop discussions as well as of scientific paper Bodmer, W.F. (1972), 'Some reflections on mechanisms and prospects of genetic exchange', Advances in the Biosciences 8, 371-385.