British History Online
Primary sources: Full-text editions of primary sources, such as the journals of the houses of Parliament or manorial records such as feet of fines. Secondary texts: Modern synthetic historical writing, including the Victoria County History and the Survey of London. Guides and calendars: Printed guides and calendars of manuscript collections, such as the Calendars of State Papers. Gazetteers and dictionaries: Dictionaries and gazetteers of places, property, goods and commodities. Maps Maps from the Ordnance Survey and historic maps from before 1800.