I was trying to make it more complicated by looking for some number to follow the "FR". I found a mostly complete manual inside one of the drawers, Book 10, and had just scanned it into a PDF file on my own. Then, in my searchings, I found a more complete version better than mine! I also had found a Book 11, which is essentially the same. I tried to load them here, but they are too large.
Here is where I got Book 11:
https://ismacs.net/white/manuals/white-rotary.pdf
I can't find where I found Book 10 -- sorry!
Thank you for your help.
Ryan