Digitization collection of over 26,000 19th-century pamphlets held in research libraries in the United Kingdom. The pamphlets represent primary sources supporting the study of sociopolitical and economic factors impacting 19th-century Britain. Content is organized into 9 collections, including British political pamphlets, Cowen Tracts, Earl Grey pamphlets, Foreign and Commonwealth Office, Hume Tracts, and the Knowsley pamphlet collection.