| William Notman Cinereous Owl; Great Gray Owl. Male & Female [Our birds of prey: or, The eagles, hawks, and owls of Canada By Henry G. Vennor ... With 30 photographic illustrations by Wm. Notman (1876)] 1876 Albumen silver print 14 x 10.2 cm (5 1/2 x 4 ins) J. Paul Getty Museum Object number: 84.XB.1338.24 LL/62936 Henry George Vennor, 1876, Our birds of prey: or, The eagles, hawks, and owls of Canada By Henry G. Vennor ... With 30 photographic illustrations by Wm. Notman, (Montreal : Dawson brothers)
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