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

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