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

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

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