Looking into the Telectroscope while also seeing our own reflection let us see the people at the London Bridge who were peering into their own Telectroscope, viewing us.
I'll comment! I'll comment! There's a Wizard of Oz quality to this photograph, Carol. And even though the view of London is as phony as was the floating head of the Great Oz, your photograph is more real, and creative, then the trick photography used in the movie.