Typewriter Links and Reference
https://typewriterdatabase.com
A great resource for looking up dates and timeframes of various typewriters by make, model or serial number.
https://site.xavier.edu/polt/typewriters/index.html
One of the longest running online typewriter resources maintained by the author of The Typewriter Revolution Richard Polt
https://typewriterrevolution.com
https://typosphere.blogspot.com
Youtube Channels
https://www.youtube.com/@Joe_VanCleave
https://www.youtube.com/@JustMyTypewriter
