The following list of places and dates will show how far it is likely,
if we turn from facts to probabilities, that Oxford should have started
printing in 1468. Only the first two towns of each country are given,
with the exception of England: and the claim of Oxford is purposely
ignored.
1. Germany (Mainz, not after 1454: Strassburg, before 1460: Cologne
began not later than 1466).