Published at the end of the 19th century when the pronunciation debate was raging, this book summarizes the main arguments being made by the “itacist” camp:
Introduction taken from the Grammar of Greek-born Oxford scholar Alexander Helladius in 1712, in which he critiques the manner that Greek was pronounced at that time in Western Europe (and, more or less, still is today):
For a brilliant examination of all the arguments for and against the Erasmian pronunciation, and a synthesis of all existing evidence, see the following (as yet unfinished) website:
Although some of the author’s proposals are untenable (in particular, regarding the values of ξ and ψ), the remaining content is excellent. There is no other such resource on all the internet.