[Reply to Dr. J. G. Cooper's article entitled "The Water Birds of North America, Explanations," in The Auk, III, 1886, pp. 401,402.]v. 3American Ornithologists’ Union403
Ridgway, Robert. 1886. "[Reply to Dr. J. G. Cooper's article entitled "The Water Birds of North America, Explanations," in The Auk, III, 1886, pp. 401,402.]." The Auk, 3 403.