Could there be more documents written in voynichese ?

[Mark Knowles]

If such material still exists somewhere, it should be relatively close to the place of origin of the MS.
This is perhaps the main reason why I wrote elsewhere that the Vatican is not a likely place for this. Rome is way too far south.

Why do you think that such material should be relatively close to the place of origin of the MS?

In my experience, unfortunately, documents seem to travel far and wide from their place of origin. Documents produced within a religious institution could very easily find their way to the Vatican.

From my experience I can think of an enciphered letter of Francesco Sforza in a Moscow archive. I can think of Marcolino Barbavara's enciphered letters in a Paris library. I recently saw an advertisement for 1450 Milanese enciphered letters for sale on the open market for €800; they could have been purchased by anybody in the world. There is a cipher ledger and enciphered letters of the Avignon Popes in the Vatican archives. The Voynich manuscript itself is in America. Unfortunately, documents seem often to find their way to unexpected places which makes them that much harder to find.