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

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