People's Use of Information Technologies in the Pre-Telegraphic Era
This timeline shows the progress of information technology in the United States during the pre-telegraph era.
Note: If you are confused by the dates, you can use the down arrow located in the orange heading where the title is located and is on the right side. If you continuously click on the down arrow, the order of the dates will appear much clearer. Not the website's fault; most of the dates are close together.