Extension of his work—Financial panic and revolt of patrons—New western collections—His "book of Nature" completed—Work on the letterpress in Edinburgh—Vacation in the Highlands—Commissions to Harris—Parting address to the reader—Dissolution of the Havell engraving establishment—The residuum of _The Birds of America_—Robert Havell, engraver, and his family—Lizars' first edition and the Havell reissues of plates—Brief manual for collectors—Appreciations—Total edition of _The Birds of America_—Past and present prices—The Rothschild incident 168 CHAPTER XXXIII NEW ENTERPRISES AND LIFE AT "MINNIE'S LAND" Settlement in New York—The _Birds_ in miniature, and work on the _Quadrupeds_—Marriage of Victor Audubon—Coöperation of Bachman in the _Quadrupeds_ secured—Prospectuses—History of the octavo edition of the _Birds_—Baird's enthusiasm and efficient aid—Parkman's Wren—Baird's visit to Audubon in New York—"Look out for Martens," and wildcats—New home on the Hudson—Godwin's pilgrimage to "Minnie's Land" in 1842 208 CHAPTER XXXIV EXPEDITION TO THE UPPER MISSOURI Ambitions at fifty-seven—Plans his last expedition in the _rôle_ of naturalist—Credentials from public men—Canvassing tour in Canada described—Baird's plans to accompany Audubon west frustrated—Western expedition begun—Ascent of the Missouri and Yellowstone—Discoveries of new birds—A wilderness that howls—Buffalo hunting—Passing of the great herds—Return from Fort Union—Incident on the canal boat—Completion of the octavo edition of the _Birds_ 239 CHAPTER XXXV FINAL WORK DAYS Painting the _Quadrupeds_—Assistance of Bachman and Audubon's sons—Copper plates of the _Birds_ go through the fire in New York—Audubon a spectator at the ruins—Bachman's ultimatum—Success of the illustrations of the _Quadrupeds_—Bachman's letterpress—Recommendation of Baird—J. W. Audubon in London—Bachman's assistants—His life and labors—Decline of Audubon's powers—Dr. Brewer's visit—Audubon's last letters—His death at "Minnie's Land" 261 CHAPTER XXXVI AFTERWORD: AUDUBON'S FAMILY IN AMERICA