https://www.reddit.com/r/typewriters/comments/3wut0f/rotating_keys_on_smith_corona_silent/

See also: https://hypothes.is/a/QSmmGAuyEe-liOcGXnKxOA

A New U: Replacing a key legend on a Royal KMM typewriter<br /> by [[Richard Polt]] on The Typewriter Revolution blog<br /> accessed on 2025-11-04T10:16:51

A good, short tutorial on how to replace the key legends of a glass key typewriter with photos and tools. Also includes a .pdf template for the legends of a Royal KMM typewriter.