Letter from Geoffrey Marr Vevers to Dr M Mazels enclosing tickets for admission to London Zoo and Whipsnade Zoo following his assistance in the chemical examination of the blood of a Giraffe

Letters from Sir Francis Galton to Philip Lutley Sclater on subjects including blood transfusion instruments that had been adapted for rabbits

Diary of health and treatment of animals written by Mr Charles Spooner, medical attendant" at London Zoo from 1829-1833. Covers 2 July 1829 - 26 Feb 1831."

Journal written by William Youatt, Medical Superintendent at the Gardens 1833-1843. Covers 30 May 1833 - 28 March 1835.

Covers 1 June 1865 - 31 Dec 1868. Date incorrect on spine.

Research notebook of A H Garrod, Prosector/Anatomist at London Zoo (1871-1879). Contains notes on the post-mortems of animals. Most are not dated.

Report of the Helminthologist, T. Leiper, covering 8 years. Helminthology is the study of parasitic worms.

Journal written by William Youatt, Medical Superintendent at the Gardens 1833-1843