Purely History on Instagram: "Before the internet, newspapers used a system called wired photo transmission to send images across long distances. A photo would be scanned by a special machine that converted its light and dark tones into electrical signals, which were then sent through telephone or telegraph lines. On the receiving end, another machine reassembled those signals into a printed copy of the original image. This process, used widely by news agencies in the 1930s and beyond, allowed p