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Certification of Incorporation and Change of Name (No. 2226414), from Alnery No.697 Limited to Zoo Operations Limited. (2 copies)

Two deeds between Dr Christine Hawkey, ZSL, The British Heart Foundation and the National Research Development Corporation regarding the assignment to, and use by, the NRDC of an invention by Dr Hawkey: "Isolation of Biologically Active Materials Influence

A Deed of Covenant and Deed of Rectification between Zoo Enterprises Limited and ZSL. The Deed of Rectification is a supplemental to the Covenant

Correspondence between the Zoological Society of London and Tony Pittman regarding the death of a Hyacinthine Macaw at London Zoo

Includes memos about ZSL Library

Circulars, printed papers and correspondence of Dr Bidder, mainly concerning the Meetings of British Zoologists, the forming of the Association of British Zoologists, and urging the split of the British Museum and the Natural History Museum. Most are from 1920's and are unordered. Includes letters from Prof. Balfour-Browne, P Chalmers Mitchell and E Ray Lankester, etc