John Gould (English, 1804-1881) & Henry Constantine Richter (English, 1821-1902), “Mergulus Alle. (Little Auk; Volume 5, Plate 50)”, Dovekie (Alle alle); juvenile (left) and adult in breeding plumage (right), Hand-colored lithograph on paper, c. 1862-1873, On loan from the collection of Dr. Michael and Elyn Stubblefield