No, Insane Beard, it's a brand new book called Faces in Stone, by Robert Arthur King. It's got pictures of many, many faces on NYC buildings, only some of which--50 or so--are foliate heads.

You can see more about the book here.

Although the description of the publisher says "one hundred architectural details," they really mean details from one hundred buildings. In fact, I estimate there are about 200 details, about fifty of which are foliate heads.