3.5 or so
Parts were fascinating. There's a lot here: art, comics (and eventually graphic novels), American politics, celebrities, theatrical plays, screenplays, satire, children's books, famous publications, and on and on.
I might have enjoy it better had I taken the latter part at a slower pace, but my digital check out was expiring. Loved the art, thought some of the connections to familiar names were interesting. He did so much and I've also read some of his more recent works.