A Sears stereoscopic view entitled "Eavesdropping" (#872 in the "Metropolitan" series). I don't have the exact date on this, but it is pre-WWI. Gleaned from stereoview
On the one hand, I want to recap what's been going on at work, but on the other hand it's going to be pretty foreign to just about everyone that reads this with the exception of only a couple of people.