Palatino 766 pipes, pools, cliffs, streams... (by Taccola)

[ReneZ]

For me, Siena is a bit outside the likely area of influence for the Voynich MS, both geographically (it is quite far south) and timewise, though that is definitely marginal. There would have hardly been any timefor the MS to 'spread'.

Siena should be 'goat skin territory', though that should be checked. 

On the Rosenwald manuscripts, it should be noted that these are Valturius manuscripts that postdate the Voynich MS. I am not aware of the repationship (dependence) of Valturius on Vegetius, which (most probably) predates the Voynich MS.

Finally, I am hesitant (as always) to infer things too specifically from drawing similarities. 
You are not allowed to view links. Register or Login to view. in Vegetius (from the Wikipedia page) is more similar to anything I have ever seen to our 'mussdel' drawing, but I am convinced that is coincidental.