This database allows you to search across one or more of the following primary sources.  

• Archives Unbound
• Archives of Latin American and Caribbean History, Sixteenth to Twentieth Century
• British Library Newspapers
• British Literary Manuscripts Online
• Chatham House Online Archive
• China and the Modern World
• Daily Mail Historical Archive
• Eighteenth Century Collections Online
• Nineteenth Century Collections Online
• Nineteenth Century UK Periodicals
• Picture Post Historical Archive 1938-1957
• 17th and 18th Century Burney Newspapers Collection
• The Listener Historical Archive 1929-1991
• The Economist Historical Archive
• The Illustrated London News Historical Archive (1842-2003)
• The Making of the Modern World
• The Telegraph Historical Archive
• The Times Digital Archive
• The Times Literary Supplement Historical Archive.

More detailed descriptions of each of the collections is available via this link.