British History Online

British History Online is a digital library containing some of the core printed primary and secondary sources for the medieval and modern history of the British Isles. Created by the Institute of Historical Research and the History of Parliament Trust, it aims to support academic and personal users around the world in their learning, teaching and research.
With so much material now being published on the world wide web in either un-reviewed form, or in fee-based services, the IHR has shown its commitment to promoting the study of history by publishing these priceless resources for their historical value, cross-searchable, in one place and free of charge.
Excellent site, Mr. France. Local Investigations 101?
http://www.british-history.ac.uk/