Thanks for the help guys. My friend who is a falconry book collector said this a "holy grail" book as well. There are a few books that are available that say they are first editions that were bound by the original publisher in a green hardcover. These are the ones I am suspicious of. Just interesting that a book that I my opinion is a milestone in falconry literature was only published in such a short run. Guess no one knew what they had their hands on.