I am not sure when exactly, but pretty recently, maybe in the spring, someone posted a simiar one here and we even discussed the giant radio in it.
I've noticed Shorpy suffers from a dearth of Philcos. Do a search for Philco on Shorpy and you get a small handful of hits. I like this one, though, of a large array of Philco batteries that seem to be powering a PA system in the 20s. Another good one in the Philco list at Shorpy is a store front sign for the "Philadelphia Diamond Grid Battery."
http://www.shorpy.com/node/17169
Cool picture of back in the day...Hmmm, why cant we go back to that era when things were less stressful on family were always together?