Fordham University provides a list of links to online primary sources from the modern era.
Contains documentary material of thousands of Londoners, including both plebeians and the officers who manned the institutions of government and social welfare.
This is a site created by an American college and has great links to primary sources and research data.
This website provides lots of primary sources relating to major personalities of the British Industrial Revolution. It has painstakingly collected digitised prints, paintings, drawings, objects, buildings, letters, maps, plans, newspapers and other printed materials for use by teachers and students.
An online academic database used by universities worldwide that is a superb resource for History students. To view full articles, you will require membership.
This searches internet sites for academic articles and books. It often only provides one or two pages, but it is often enough to find quotes and bibliographical details.