Letters from Sir Peter Chalmers Mitchell to Joan Procter regarding a meeting of the Aquarium Committee and Procter's assistance in designing and making models of the rockwork decoration for the tanks

Correspondence between Sir Arthur Landsborough Thomson and L Harrison Matthews regarding the XI International Ornithological Congress, Scientific Meetings, the Medical Research Council's Radiobiological Research Unit, the International Congress of Zoology, Council Meetings, Goliath Herons, reports of the Prosectorial Sub-Committee, meetings of the Publication Committee, the British Ornithologists' Union, the proposed advertisement for the Curatorship of the Aquarium, Corresponding Membership, and meetings of the Selection Committee and Planning Committee