VI. FAMOUS MEN OF SCIENCE. By Sarah Knowles Bolton. (Boston, 1889: T. Y. Crowell & Co.)

VII. AUDUBON AND HIS JOURNALS. By Maria R. Audubon. With Zoological and Other Notes by Elliott Coues. (New York, 1897: Charles Scribner's Sons. Two volumes.) This is by far the most interesting and authentic of any of the sources of information.
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