John Gould (English, 1804-1881) & Henry Constantine Richter (English, 1821-1902), “Eucephala Smaragdocaerulea, Gould. (Green and Blue Sapphire; Volume 5, Plate 331)”, Violet-capped Woodnymph (Thalurania glaucopis), Hand-colored lithograph with gold leaf on paper, c. 1849-1861, On loan from the collection of Dr. Michael and Elyn Stubblefield