Scientists at the National Science Foundation have radiocarbon dated the Voynich Manuscripts pages to someimte between 1404 and 1438.  I have looked at the manuscript, it is available online, search for Voynich Manuscript, and it is pretty strange.  No one has ever been able to figure out what if anyhting the characters and symbols on the page mean.    There are several theroies about who wrote and what it means.A true history mystery.