5 volumes, double-elephant folio. 43 (of 50) color prints, on archival cotton sheets, blind-stamped and signed. Publisher's cloth portfolios, morocco labels gilt to upper covers and spines. 

LIMITED EDITION, number 42 of 150 copies, each print numbered and signed by Field Museum librarian Ben Williams. The Oppenheimer edition of Audubon's prints, created as a joint venture between the Joel Oppenheimer Gallery and the Field Museum of Chicago, is noted for having produced the highest quality prints of Audubon's illustrations since the original edition of Birds of America.