I bought this book because Callahan is one of my favorite cartoonists. He has a razor wit and creative bent unique in our time. However, this book is merely a retrospective of the development of Callahan's art over the years (I'm assuming; the panels are undated). Many of the early pages are useless as humor; their only value is for an academic or a family friend. Many of the drawings are crude (early career?), and many of the concepts are repeated or are just not enlightening as humor. I was hoping for a collection of his finest work. Digested and passed in twenty minutes. Woof.