Excellent scholarly work that explains and shows what Audubon did, and how he did it. As a collector of original Audubon Havell prints, I found the introductory chapters to be informative, readable and very helpful. Wonderful explanations of his technique. About eighty of the plates are rendered nearly full size in this large book. The other 390 are included in an index as full-color 3 X 4 prints. All of the 435 original "Birds of America" images are in this book as well as quite a few other Audubon watercolors that were never syndicated for printing. There are several appendices including one that lists the actual size of each watercolor. Very helpful to a collector. I especially enjoy comparing Audubon's original watercolor paintings depicted in this book, with the large, excellent renderings of the Havell prints in "Audubon Birds of America" by Tim Parmentor, also available from Amazon. My one tiny complaint is that all of the color images are designated by the Roman numerals that Audubon assigned to them. Pain in the neck. Great gift book for both art students and birdwatchers.