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
Deed of release between the Zoological Society of London and Edward Christopher Fry, the executor of Arthur Louis Allen
Deed of Covenant between ZSL and Zoo Operations Limited
A Deed of Covenant and Deed of Rectification between Zoo Enterprises Limited and ZSL. The Deed of Rectification is a supplemental to the Covenant
Assignment of Trade Marks between ZSL and Zoo Enterprises Limited. The following trade marks are: Mark: Ark Device; Numbers: 879190, 879191, and 879192; Dated: 7th May 1965; Class: 16, 20 and 31 respectively, (2 copies)