Re: "The Book of Angels"
I agree that the artwork is phenomenal, as far as information, it's accurate in what it says, but very general.
By accurate I mean in the sense of text and scripture reference. It gives a good idea on Angels from Judaism, Christianity and Islam, and makes references to other religions and examples of Angelic phenomena worldwide and throughout history. However you'd best go to more source material for in depth study.
The maximum effective range of an excuse is zero meters.