To my pleasant surprise, four new reviews turned up. One is in the main mag of the book trade, Publishers Weekly—and it's the book's third starred review! The other three reviews are from sites new to me.
"Vibrant and well-researched...Nobleman details this achievement with a zest amplified by MacDonald's...punchy illustrations"
—Publishers Weekly 6/23/08
"I have to praise this wonderful book. It has something for children and adults, fans of comics and otherwise...I don't use the word a lot, but the book is very charming."
—PLAYBACK:stl (a St. Louis arts site) 6/20/08
"Terrific...elegantly laid down"
I'm heartened how each review picked up on different small details. I'm heartened, period.