This limited deluxe slipcased edition is signed by Neal Adams and has a 16-pg bonus art portfolio of rare and unpublished works.
From the publisher:
Collected into an English-language graphic novel for the first time, this material was originally serialized in Adam's anthology "Echo of Future Past." This new edition has digital coloring and effects in a process personally overseen by Adams to conform to his exacting standards for rendering, lighting and form. New pages have been added, new covers as well as a special section of rare paintings, sketches and drawings of monsters that captured his imagination throughout his illustration career.