Editing Typewriter (section)

==== Four-bank keyboard ====
The Daugherty Visible also introduced the four-bank keyboard, which also became standard, although the Underwood, which came out two years later, was the first ''major'' typewriter to support frontstriking and a four-bank keyboard.<ref name="Robert1">{{Cite web |last=Robert |first=Paul |title=Daugherty |url=http://www.typewritermuseum.org/collection/index.php3?machine=daugh&cat=kf |url-status=live |archive-url=https://web.archive.org/web/20110729132951/http://www.typewritermuseum.org/collection/index.php3?machine=daugh&cat=kf |archive-date=July 29, 2011 |access-date=July 5, 2012 |website=Collection |publisher=The Virtual Typewriter Museum}}</ref><ref name="Seaver1">{{Cite web |last=Seaver |first=Alan |year=2011 |title=Daugherty Visible |url=http://machinesoflovinggrace.com/ptf/VisDaughertyPittsburg.html |url-status=dead |archive-url=https://web.archive.org/web/20130511211636/http://machinesoflovinggrace.com/ptf/VisDaughertyPittsburg.html |archive-date=May 11, 2013 |access-date=July 5, 2012 |website=Machines of Loving Grace website |publisher=Alan Seaver}}</ref>