Personal and scientific working papers of Patrick Bateson. Personal papers include material relating to Bateson’s schooling and education, family history papers, diaries, notebooks and journals, a small number of photographs and material relating to his post-retirement interests. Scientific papers include research notebooks, experiment data, offprints, articles and draft articles, material relating to books and proposed books, and assorted notes covering the full range of Bateson’s research interests from his earliest work on ivory gulls in the Arctic Circle to imprinting in birds, perceptual learning in monkeys, mate choice in Japanese quail, play in the domestic cat, hunting of red deer and dog breeding. Administrative papers include some material relating to the Sub-Department of Animal Behaviour at Madingley and to other administrative roles held by Bateson at King’s College, Cambridge, and the Royal Society. Teaching papers include lecture notes for Part II Animal Behaviour, Part II Zoology and Part IB Animal Biology, and a large collection of 35mm slides used as teaching or lecture aides.