The <a href="https://en.wikipedia.org/wiki/Sholes_and_Glidden_typewriter" id="mw0A" rel="mw:WikiLink" title="Sholes and Glidden typewriter">Sholes and Glidden typewriter</a>, the first commercially successful <a href="https://en.wikipedia.org/wiki/Typewriter" id="mw0Q" rel="mw:WikiLink" title="Typewriter">typewriter</a>, goes on sale.