Letters from Sewallis Edward Shirley, 10th Earl Ferrers, to Peter Chalmers Mitchell regarding his gift of a Wild Bull to the Zoological Society of London and his request that no progeny of the bull was to leave the Gardens
Letter from Cuthbert Edward Swan to Peter Chalmers Mitchell regarding his subscription to the Zoological Society of London
Correspondence between Hans Heck and Julian Sorell Huxley regarding the construction of a new Elephant House at the Zoological Society of London
Correspondence between Richard M Lockley of The Pembrokeshire Bird Protection Society and Julian Sorell Huxley requesting permission to nominate Huxley as Vice-President
Correspondence between Albert Pam and Julian Sorell Huxley regarding plans for the new Elephant House and meetings of the Lay-Out Committee
Correspondence between E Thompson and Julian Sorell Huxley regarding Sir Stanley Reed, the Maharaja of Bhavnagar and the construction of the new Elephant House at London Zoo
Correspondence between Julian Sorell Huxley and Achille Urbain of the Parc Zoologique de Vincennes in Paris, regarding the construction of the new Elephant House at London Zoo
Letters of congratulations to zoological gardens and learned institutions from the Zoological Society of London