London: Collins, (1976. first edition). Octavo, photographs, text illustrations, very good copy in dustwrapper. New Naturalist 60. More about British birds of prey: a study of Britain's 24 diurnal raptors
London: Collins, 1982. Quarto, colour plates, very good copy in dustwrapper. More about The falcons of the world
Randburgh: Acorn Books, 1990. Quarto, colour photographs, dustwrapper. More about The Black Eagle
New York: Bonanza Books, 1964. Quarto, photographs, bookplate, fine copy in dustwrapper. More about Birds of prey of the world