An early letter of Audubon to Edward Harris, written at Philadelphia, July 14, 1824 332 Note of Dr. Samuel Latham Mitchell, written hurriedly in pencil, recommending Audubon to his friend, Dr. Barnes, August 4, 1824 337 Crayon portrait of Miss Jennett Benedict, an example of Audubon's itinerant portraiture. After the original drawn by Audubon at Meadville, Pennsylvania, in 1824 Facing 342 Miss Eliza Pirrie, Audubon's pupil at "Oakley" in 1821. After an oil portrait Facing 342 Early drawing of the "Frog-eater," Cooper's Hawk, 1810, hitherto unpublished Facing 348 Pencil sketch of a "Shark, 7 feet long, off Cuba," from Audubon's Journal of his voyage to England in 1826 Facing 348 First page of Audubon's Journal of his voyage from New Orleans to Liverpool in 1826 Facing 349 Cock Turkey, _The Birds of America_, Plate I. After the original engraving by W. H. Lizars, retouched by Robert Havell. Color Facing 358 Title page of the original edition of _The Birds of America_, Volume II, 1831-1834 381 The Prothonotary Warbler plates, _The Birds of America_, Plate XI, bearing the legends of the engravers, W. H. Lizars and Robert Havell, Jr., but identical in every other detail of engraving Facing 384 Reverse of panels of Robert Havell's advertising folder reproduced on facing insert 386 Outside engraved panels of an advertising folder issued by Robert Havell about 1834. After the only original copy known to exist 386 Inside engraved panels of Robert Havell's advertising folder, showing the interior of the "Zoölogical Gallery," 77 Oxford Street Facing 387 Reverse of panels of Robert Havell's advertising folder, reproduced on facing insert 387 Title page of Audubon's Prospectus of _The Birds of America_ for 1831 391 English Pheasants surprised by a Spanish Dog. After a painting by Audubon in the American Museum of Natural History Facing 394 Letter of William Swainson to Audubon, May, 1828 402 Audubon. After an oil portrait, hitherto unpublished, painted about 1826 by W. H. Holmes Facing 412 Part of letter of Charles Lucien Bonaparte to Audubon, January 10, 1829 417