I have written about them before, in my first manuscript.
There is a break in the manuscript between 1508 and 1519.
There are two or more hands found in the manuscript.
The work has come down to us in 10 manuscripts.
The book has come down to us in two manuscripts only.
He couldn't see the difference in the manuscripts you gave him!
There is nothing in the manuscript that isn't already known.
He published over a hundred works, and left many more in manuscript.
Many of the pieces in the manuscripts are his own work.
Some of those friends now gently play down their role in the manuscript.