I had a quick look at the book this morning. It has the Libeskind interview, pictures of the earlier ROM wings under construction including a couple of interesting renderings of proposed Terrace Gallery designs that weren't built, some written history of the ROM, philosophical chatter about the role of the museum and the Crystal etc. etc. Not bad at all.
Another good ROM book, which can be found in second-hand bookshops and on eBay occasionally, is The Museum Makers by Lovat Dickson, published in 1986.
And, of course, Charles Trick Currelly's autobiography, I Brought The Ages Home.