21. _1851._—Death mask; profile from original, since destroyed by fire, reproduced in _Scribner's Magazine_, vol. xiii, by Maria R. Audubon (Bibl. No. 40), March, 1893. 22. _1851._—Profile of head; pencil sketch, after death, made by John W. Audubon; reproduced by Maria R. Audubon, _Audubon and his Journals_, vol. ii, p. 526. 23. _1861._—Oil portrait by Alonzo Chappel, engraved on steel for Duyckinck's _National Portrait Gallery of Eminent Americans_ (see Bibliography, No. 74), and published by Messrs. Johnson, Fry & Company, New York, 1862. The original of this portrait, which was evidently drawn, with slight changes, from the large painting of the same subject by John Woodhouse Audubon, executed about 1841 (see No. 13), is now in possession of Mr. Ruthven Deane, who has written me that it is done in black and white, like all of Chappel's work which was designed for the purposes of steel engraving, and measures 12 by 17 inches. Concerning this artist, Mr. Arthur Lumley wrote to Mr. Deane on April 26, 1905, as follows: "I knew Chappel in my boyhood days, when he ranked next to Felix O. C. Darley as an illustrator; at the same time he was a good portrait painter in oil. Chappel, in many ways, was a gifted man, and his historical pictures were fine in composition and color. He held a high rank, and had no occasion to seek orders, having all he could do, and at his own terms; most of his work was reproduced by steel-plate engravings": Chappel, he adds, who died about 1875, was "a quiet, genial gentleman who was ever ready to help and guide rising aspirants in the field of art." 24. _1907_ (unveiled).—Bust by William Couper; unveiled at the American Museum of Natural History, New York, December 29, 1906. Reproduced through courtesy of the Museum, at p. 160 of Vol. II of the present work. 25. _1910_ (unveiled).—Statue, by Edward Virginius Valentine; unveiled in Audubon Park, New Orleans, November 26, 1910; reproduced at p. 14 of Vol. I of the present work. APPENDIX V BIBLIOGRAPHY Besides the published writings of Audubon, I have included in this Bibliography such references to his life and times as occur in the text or which possess some degree of merit; all other important literary and historical authorities are cited in footnotes to the text. The titles appear in a single numerical series, but the arrangement under each head is strictly chronological. All references to this list in the text are indicated usually by title, with the name of the author, and always by Arabic numerals, in correspondence with the series which follows. If some chaff has been admitted to this garner, no corn, I hope, has been thrown into the fire. a. Principal Works 1. AUDUBON, JOHN JAMES: