The Digital Revolution is creating a transformation in genealogical research.
I'm looking at a book first published in 1819: "The History of the county of Palatine and city of Cheshire: compiled from original evidences in public offices, the Harleian and Cottonian mss., parochial registers, private muniments, unpublished ms. collections of successive Cheshire antiquaries, and a personal survey of every township in the county; incorporated with a republication of King's Vale royal, and Leycester's Cheshire Antiquities." by George Ormerod, 1785-1873: Free Download & Streaming: Internet Archive.
The 1882 three volume set is for sale for about $1,500. Or, from the convenience of their home computer genealogists and amateur family tree makers may access such documents, whose copyright has long since expired. I use Internet Archive, Google ebooks, and other Internet resources both to do further research and to verify source records.
Yesterday I read the chapter on Sir Saher de Quincy from Magna Carta Ancestry by Douglas Richardson. I also checked on the religious affiliations of my ancestors who settled New Jersey around 1692, which was available over the Internet through Heritage Quest with a Multnomah County Library card.
There is only one "problem" with the amazing proliferation of old and rare books on the Internet. How will I find the time to read them all?