Book of the Weeping Angels

The book of the Weeping Angels was a book written about the Weeping Angels.

History
On Alfava Metraxis in the 51st century, River Song found a book about the Weeping Angels. She gave it to the Doctor, who skimmed through it. The Doctor commented that it was slow in the middle and asked River if she also did not like the man's girlfriend. He then noticed that something was wrong. He questioned why there were no images, to which River replied that the "image of an Angel, is itself an Angel". This alerted the Doctor to the fact the video that had been recorded of the Angel was a danger. River stated that it was written by a mad man. (DW: The Time of Angels)

The Doctor kept the book and stored it in the TARDIS drawing room. (VG: TARDIS)

Behind the scenes
The book is not properly named in either of its appearances. It's best thought of as "a book about the Weeping Angels", rather than the Book of the Weeping Angels.