William Lutley Sclater was a zoologist and the son of previous ZSL Secretary, Philip Lutley Sclater. He himself was only ZSL Secretary for 1 year in 1903, before Peter Chalmers Mitchell was selected for the post.
William Ogilby was a zoologist. He is perhaps best known for this work around the classification order of cheiropoda, linking mammals who had hands. He was ZSL Secretary from 1839-1847.
William Yarrell was a zoologist. He was one of the original members of the Zoological Society of London and was a founder of the Royal Entomological Society. He was ZSL Secretary from 1836-1838.
Letter from Alfred Thomas Williams to Philip Lutley Sclater regarding the feeding of live animals to reptiles at the Gardens of the Zoological Society of London
Letter to Iolo A Williams regarding an article on the Zoological Society of London by The Times
Letter to the Marquess of Willingdon regarding a donation of a Welsh Colt to the Zoological Society of London
Correspondence with Dr H F Willis of the Royal Naval Scientific Service regarding an enquiry into the basis of the Loch Ness Monster legend, and minutes of a meeting to discuss the Loch Ness phenomena held at the Linnean Society
Correspondence between Mrs M Wilson and Julian Sorell Huxley regarding a Guinea Baboon with a diagnosis of Blastomycetes (not Lupus) by Colonel Hamerton, and matters raised at the last General Meeting including her presence in the Keepers' Rooms
Letters from H Windhorn to Philip Lutley Sclater regarding the transport and death of the Queen's Giraffe
Letter from Mervyn Wingfield, Viscount Powerscourt and President of the Royal Zoological Society of Ireland, to Philip Lutley Sclater regarding the arrival of a stag