The official published annual reports of ZSL. Also known as 'Reports of the Council and Auditors of the Zoological Society of London'. From 2001 called 'Annual Review'.

List of the Officers and Servants of ZSL with the Salaries of each, 1 Oct 1836; List of Officers & Keepers – and date of appointment, Dec 1853; Income and Expenditure 1825-1857; Income and Expenditure 1825-1875; Return of the Garden Establishment showing Occupation, Rate of Wages, 8 Dec 1848; Quantities of Fruit & Vegetables consumed in the Society’s Gardens, 1898; Zoological Photographic Club’s Exhibition 1912 – Regulations; [Table of] Year, No. of Fellows, Income, Expenditure, Admissions to Gardens, 1825-1904; List of the principal buildings erected in the Society’s Gardens since 1860 and their cost, 1860-1883; Cost of principal buildings erected in the Society’s Gardens from 1859 to 1899; Notes on Garden Guide sales, 1903; Attendances at Lectures, 1882-1884, 1897-1899; Lectures Regulations, 1900; Amounts paid annually for rates, 1866-1884; Rules for Keepers living in the Lodge, 1910; Visitors and Receipts on Christmas Day, 1888-1908; Notes by A Thomson on injuries to keepers caused by Rhinoceros, Huanaco and Chimpanzee, 1907

Extracts pasted on paper and underlined

List of American zoos by A Lindsay; Report of a visit to New York and Chicago (1936); 'Notes on visits to some foreign zoos, 1934 and 1935' by Huxley (covering New York Bronx, Philadelphia, Washington, Paris Vincennes, Hamburg, Berlin, Munich Hellabrun, & Frankfurt); extract from report on the British Colonial Exhibit, World's Fair, New York, 1939; Report on visit to Austria and Germany by D Seth Smith (c1937); Report on a visit to the Zoological Gardens at Antwerp, Rotterdam and Amsterdam (1935); Report on a visit to France (1938); letter from Chalmers Mitchell to the Directors of Zoological Gardens in Germany, introducing Huxley, 1935; handwritten notes on zoos; notebook; 'La Reproduction des Animaux Sauvages en Captivite' by A Urbain; Report on visit to Brookfield Zoo (1940); guide to Internationalen Jagdaustellung, Berlin, 1937.