John Gould (English, 1804-1881) & Henry Constantine Richter (English, 1821-1902), “Eriocnemis Lugens, Gould. (Hoary Puff-leg; Volume 4, Plate 282”, Hoary Puffleg (Haplophaedia lugens), Hand-colored lithograph with gold leaf on paper, c. 1849-1861, On loan from the collection of Dr. Michael and Elyn Stubblefield