This work offers buyers, sellers, and collectors an easy-to-use, one-volume source of information for these bird and quadruped prints of John James Audubon. It contains obscure references, where the author, Bill Steiner, has surveyed the contemporary market-place. Addressing one of the more complex aspects of print collection, the text clarifies the task of distinguishing the octavio prints of the successive editions of Audubon's ""Birds of America"" (1840-1871) and ""Quadrupeds of North America (1849-1870). It describes the publication histories of each edition since the first, offers information about printers, engravers, and subscribers, and provides practical information on price histories, accessibility, and preservation.