What's the worst art history book you've ever read?
I'm reading one right now, a biography of Bernini, and although the research and information presented is commendable, the author keeps going off on tangents and making sweeping baseless comments about other artists without providing evidence (e.g. Bernini's competitor, Artist Y, was totally crazy and unstable). It's frustrating because I really want to like this book and recommend it, but I just can't when the author continually leaves out support for the broad statements he makes. At first I thought, "Oh, he'll support it in a couple pages after this tagent." Nope.
So, anyway, this is one of the worst books I've read because of the organization and lack of support. What are some of yours?