Very old books
Hi,
As a researcher and author I initially found Google Books a potential threat. However I have changed my tune as it is now possible to find information which was previously unknown.
This is due to the fact that many books only exist courtesy of Boston who were the second largest producer of books historically and these books only appear to exist in American Libraries. This may be due in part to an American bias to which the British Library did not subscribe.
I am in the process of writing my third book, a novel which relates to early 18th Century politics, a small addition to the history of the start of the American revolution. I am actually very thankful to Google books without which the information would have been impossible to find.