New Pershing Square, Los Angeles, Circa 1920, Business Office Of A Pasadena Trip
a distich of prissy buses. On the left one's door seems to hold upwardly written Packard Deluxe, or De Classse. It's in all probability a 1916 or 17
The floor of that cannon is here: http://www.shorpy.com/node/13244#comment-138470 (thanks Steve!)