The sketches come from X-Men, Avengers, Superman vs. Muhammad Ali, Batman #251, Conan #37, Thrillkill, and other iconic comics. Adams' commentary accompanies each drawing.
From the publisher:
Legendary Batman and X-Men artist Neal Adams said, "If you're interested in getting to the thought process that has gone into the work that I have done, this could be just the sketchbook that does it for you. Here, if you like, you can climb down into my mind. Just watch the first step, it's a doosey."
Vanguard enlisted Arlen Schumer to help compile the Adams Sketchbook. Schumer has quickly become the top Adams historian, following his definitive, Neal Adams: the DC Years for Comic Book Marketplace and Neal Adams: the Marvel Years for Comic Book Artist magazine.