Includes personal notebooks, ephemera, documents relating to family members and to the transfer of Wallington Hall to the National Trust.

Subjects include antiquarian matters, natural history, botany, palaeontology and geology. Includes requests for subscriptions and thanks for donations. Also includes an apothocary's receipt from 1763.

The archive comprises mainly correspondence addressed to Sir Walter and his first wife Pauline Lady Trevelyan nee Paulina Jermyn. The letters reflect the couple's interests in natural history, botany, geology, antiquities, travel, temperance, phrenology, art and literature, and include examples from many well known contemporaries.

There is also material relating to the history of the Trevelyan family, accumulated during Walter and Charles Edward Trevelyan's preparation of 'The Trevelyan Papers' for publication.

The archive also features diaries and journals, sketchbooks, notes for speeches and scrapbooks. There is material relating to the North East of England, including proposed railways, Tyne crossings at Hexham and decoration of the Great Hall at Wallington.

Official papers, deeds and documents relating to the purchase of the Hexham East Ferry by Sir Walter Blackett, and the construction of a bridge over the Tyne at Hexham. Features Joseph Dunn, John Glendinnings, William Harbottle, R Heron and Sir John Trevelyan. Also includes 2 bound volumes - "Hexham Bridge", being a collection of papers about the bridge, including a copy of the "Act for the building of the bridge, 1877". "Narrative of facts relating to Hexham Bridge", being a collection of press cuttings, 1767-1788

The Butler Collection is a collection of children's literature which had been created by Mary Thwaite and further developed by Joan Butler, both librarians for Hertfordshire Library Services. It was jointly acquired by the Robinson Library and Seven Stories, the Centre for Children's Books.The collection includes eighteenth-century pamphlets and books such as Young, Rev. J. The perils of Paul Percival or the Young Adventurer (c.1841), Ballantyne, R.M. The gorilla hunters: a tale of the wilds of Africa (1897), Banks, A. Cheep and chatter or lessons from field and tree (1884) and works by such well-known children's writers as Hans Christian Andersen, J.M. Barrie, Frances Hogson Burnett, James Fenimore Cooper and Daniel Defoe as well as books illustrated by Randolph Caldecott.

"Letter written from Yarmouth to Joseph C. Walker Esquire of Eccles Street, Dublin. Letter acknowledges receipt of a sketch of Mr Howard and two short essays. Also references Aikin's acquisition of Howard's posthumous papers and the intention to publish them as a book. Also discusses Walker's writing on 'the heroic ages of Ireland' and the impact of the 'luxury of modern manners' on women. Recipient is likely Joseph Cooper Walker (1762-1810), antiquary, and the Mr Howard discussed refers to John Howard (1726-1790), prison reformer.

This collection of books was given to the Library by Gertrude Bell's brother Maurice (1871-1944), most of which previously belonged to Sir Hugh and Sir Lowthian Bell (respectively their father and grandfather) who were both industrialists. The collection consists of approximately 500 books and is strongest in economics and industry, particularly coal-mining, railways and chemistry but also including iron, steel, explosives and oyster fisheries.Included are Beckly, H. The bankers' panic: a letter to the Right Honourable Benjamin Disraeli, M.P., First Lord of the Treasury (1875), Hole, J. The homes of the working classes, with suggestions for their improvement (1866) and works by two prominent women - the writer on science, mathematics and astronomy, Mary Somerville's Physical geography (1858) and one of the leaders of the suffrage movement, Millicent Garrett Fawcett's Political economy for beginners (1876).

Regarding the creation of a watercourse at Greenwich Hospital