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

Correspondence between Edward Smith-Stanley, Earl of Derby, and David William Mitchell regarding a list of desirables from the sale catalogue of the aviary and menageries at Knowsley Hall