The Cowen Tracts are almost two thousand pamphlets which were formerly owned by local (radical) M.P., Joseph Cowen (1829-1900). The tracts date mostly from the mid- to late-Nineteenth Century and reflect Cowen's interest in the social, educational, political and economic issues of the day.

There is some earlier material, such as Deed of incorporation for the insurance of ships printed by T. Angus, St. Nicholas' Church-Yard, Newcastle (1778). Pamphlets were an effective form of public debate because they could be circulated to a wider audience than books and authors could remain anonymous. The Cowen Tracts discuss Irish politics, foreign policy, women's rights, religion, education and public health and include such titles as The Union programme for 1880: constructive, not destructive, Irish legislation [1879?], Are women fit for politics?: are politics fit for women [185-] and The education of the agricultural labourer: a paper read before the Morpeth Chamber of Agriculture, on Wednesday, Feb. 2, 1870 by M.W. Ridley (1870).

The Grey Tracts reflect the interests of their former owner, the 2nd Earl Grey (1764-1845) whose Whig government was responsible for the 1832 Reform Act, 1833 Factory Act and the 1834 Poor Law Amendment Act. The pamphlets cover a broad range of historical, social and economic subjects including colonial policy, public finance and banking, the Corn Laws and agriculture, poor relief, slavery, Catholicism, Ireland and the Greek Revolution.

With three early twentieth century exceptions, the Indian Tracts is a collection of nineteenth century pamphlets on a range of Indian subjects, such as local self-government, the Indian Civil Service, education, politics, economics, transport, the trade of opium, religion and war.

The Pollard Collection was brought together by Mr Eric Pollard and was purchased from the family with support from the Friends of the University Library in 2011. It focuses on the author, Rudyard Kipling (1865-1936) being particularly rich in early editions of his works. The collection includes a series of short stories, published as 'The Railway Library', which made Kipling's name as a writer in India, England and America. There are also many of his classic novels and works of children's literature such as Puck of Pook's Hill. During the First World War, Kipling devoted his writing to the war effort and this is represented in the collection too. Besides printed books the Pollard Collection includes cuttings and ephemera relating to Kipling as well as 16 colour folio plates by the artists Maurice and Edward Detmold, produced to illustrate the 1908 Macmillan octavo edition of The Jungle Book.