This is a tough review to write. First, the book was a gift rather than a purchase. I don't want to seem too ungrateful for that reason. But this book was very disappointing. It is already destined for donate/recycle rather than something I have any interest to keep for future reference.
Here's the "problem" for me - a non-New York City resident. While the book successfully informs the reader of various public artworks, there is not a single photo of any of them. Instead there are nicley done, though somewhat whimsical illustrations. This may be sufficient for a New York City resident who can perhaps easily visit these sites if interested. However, for one who only occasionally visits, the book is rather worthless as these illustrations do not incent much interest to see the actual works. While some may find the illustrations appealing, for me they detract from usability of the book. Why have such a book if it doesn't stimulate interest in the artworks themselves? I can easily understand a NYC resident disagreeing with me, however that in itself truly limits the audience of this book.
I contrast this, as an example, with publications that have depicted the wealth of public artworks in Mexico City in so much more appealing ways that I have made many special trips to their locations just to see them. Not special trips to the city itself - just side trips while there to the off the well beaten path locations. Perhaps other NYC related books do this already. This one absolutely does not.
On the positive side, some of the text associated with the featured works is quite interesting to read. In fairness to the author, I could justify 3 stars for this reason whereas I otherwised would have been compelled to rate the book 1 star.