Today at work Robert showed me a sign on the back door to the shop that I had never noticed, even though I had seen it a million times. It is for William J. Burns International Detective Agency. William J Burns was the Director of the Bureau of Investigation, which came before the FBI during the 1920's. He was a former Secret Service agent. Here's the shop door:
The best part is, the metal gromet looking thing to the right of the red sign IS A PEEPHOLE! MYSTERIES!