The Royal "Radio Mill" in my private collection is one of the more interesting typewriters I own. The typeface (10 pitch all-caps) is very easy to read. Considering its purpose, that makes sense. I've been using it recently to make lists for our Sunday shopping. It is a fairly mundane task and I am sure that there have been far more important things that a 10 pitch radio-mill Royal would have done in its life.
Here is one such thing:
This is a naval dispatch is dated 7 DEC 1941; a date that will live in infamy. I found it while browsing the National Archives web page. This particular dispatch was sent to Sqantum Naval Air Station outside of Boston.
What caught my eye wasn't the historical import of the document, but the typeface used to type this dispatch. When I saw it it looked very familiar. I had and idea, so I went to the office and typed this out on my Royal:
My ribbon is a little drier and the original form might be a carbonless carbon, but the similarities are there. What clinched it for me was the number "4." It is very distinctive as you can see in this earlier post:
When you see something like this it really makes history come alive.