This book contains two complete Price Guides to the Octavo Editions of the John James Audubon Quadrupeds of North America and Birds of America publications. Included are Price Guides to the Octavo Birds (1840-1871) and Octavo Quads (1849-1871) Editions. In this book, you will find important information explaining the two separate octavo editions in detail, and the factors that affect the market value of the different prints in these editions. Large multi-page tables give dealer retail market price ranges for each of the 500 Octavo Bird and 155 Octavo Quad 1st Edition and Later Edition prints. In addition, eBay realized sales price ranges for each 1st Edition print, in both octavo editions, are given for the last 5 years. There are two other useful chapters in this book: Is Your Audubon Print An Original , and Recommended Audubon Print Dealers.