Amazing thing I learned today: The "To Let" sign you stick on your apartment when you want to rent it has not changed at all in over a hundred years. http://s

Amazing thing I learned today: The "To Let" sign you stick on your apartment when you want to rent it has not changed at all in over a hundred years. http://static6.techinsider.io/image/55fec4ecdd0895a9578b45e7-1200/william-street-and-maiden-lane-1915.jpg http://static6.techinsider.io/image/55fec4ecdd0895a9578b45e7... http://static1.techinsider.io/image/55fec4ecdd0895a9578b45e8-1200/maiden-lane-and-pearl-street-1914.jpg http://static1.techinsider.io/image/55fec4ecdd0895a9578b45e8... There are several more examples in the article's collection, all identical to the ones today, down to the font face, size, and use of white space.