In the early 1970s, this font was shown for the first time for the viewer's use. However, it is not the first typeface that emulates typewriting. Previously, many fonts were designed with the same style. In the late 19th century, there are many fonts that depict typewriting style. In the start, the early letters or characters of this font were replaced for printing purposes.
It is straight and easy to get hands-on this font for your personal use. You can easily obtain American typewriter font free in your system from the mentioned link. You can use it in all your unpaid projects after downloading.