The Real Philadelphia published by the Philadelphia Business Progress Association in 1930. The amazing cover was designed by Jules F. Doriot and the photographs were taken by William M. Rittase. In my opinion, Real Philadelphia is the most interesting Philadelphia book from a design perspective. Click on the image to access the book.
I want that cover (and many of those photos, too)! Thanks for posting. Do you know if higher-res images are available anywhere?
The item is out of my personal collection. I scanned the book at 300 dpi. Penn, Temple, and the Free Library have copies in their collections.