Extra stamps on top & side page blocks.

Chapter 1 describes this as "an outsider's guidebook and roadmap through the world of science fiction, pointing out the historical monuments, backyard follies, highways, and back streets of the SF community - a tour of main events and sideshows, and a running commentary on why the SF world is the way it is." I read my copy a decade (or 2) ago, and recommend this - Hartwell's enthusiasm is immense, and catching.