Final memorandum on the unveiling of a plaque at the homing budgerigar aviary on 18 April 1955

Licences and plans of proposed London Zoo buildings, many of which were temporary structures, or not eventually built. Includes: large map of London Zoo in 1911 with position of proposed shelter marked, and plans of shelter, 1914; plans of proposed new aviary, 1906; plan of temporary shelters for HM The King's Indian Collection, 1912; plan of Proposed Wood & Iron Addition to the Prosector's Building, 1904; layout of Poultry Culture Exhibition, 1917; fire certificate Tea Pavilion Mappin Terraces, 1914; fire certificate Main Offices, 1910; temporary buildings extension, 1934. 

Memorandum regarding the Snowdon Aviary at the Zoological Society of London

Memorandum regarding the naming of the Snowdon Aviary

Correspondence between the Zoological Society of London and Buckingham Palace on topics such as admission tickets for the Gardens at Regent's Park and Whipsnade Park, the election of Vice-Presidents at the Zoological Society of London, the naming of the Snowdon Aviary, reports of the Annual General Meeting and Council meetings and luncheons for the Duke of Edinburgh

Correspondence between the Duke of Bedford and Geoffrey Marr Vevers regarding the importation of Kangaroos from Australia, Pere David Deer at Whipsnade, the transfer of Deer to New York Zoo, and New Zealand Brown Ducks in the Waders Aviary. Also a biography of the 11th Duke of Bedford

Agreement and Schedule of Conditions of Building Contract between ZSL and Leonard Fairclough (London) Ltd. to construct a New Aviary. Includes Bill of Quantities and 2 sets of duplicate plans

Articles of Agreement and Schedule of Conditions of Building Contract between ZSL and Leonard Fairclough (London) Ltd. for constructing approaches to the New Aviary and footbridge. Includes Bill of Quantities and 4 plans

Records relating to the opening of enclosures and buildings including the Michael Sobell Pavilion, the Snowdon Aviary, the Elephant and Rhino Pavilion, and the Nuffield Institute