This is a picture book on what lies underneath a large metropolitan city, shown in cross-sectional drawings. I found this at a bookstore about four years ago, but it was a reproduction of a book originally published in the 1920’s or 30’s. All the cars on the street level were period automobiles with big scoop headlamps, like Packards and Pierce Arrows. All the illustrations were in color. Even though it is a contemporary publication, no bookseller I’ve talked to has a clue what I’m talking about. (And it’s not David Macaulay.)