The Ritchie Collection comprises books, pamphlets, atlases and charts relating to the history of Hydrography, the branch of marine science concerned with studying, surveying and mapping the earth's seas and waters. The collection represents the personal library of the former Hydrographer to the Royal Navy, Rear Admiral George Stephen Ritchie (b. 1914). Its contents reflect Rear Admiral Ritchie's professional achievements, as well as his personal interest in the history of Hydrography and surveying. Technical and cartographic material sits alongside numerous primary and secondary texts on the history of Hydrography, as well as publications on the broader themes of seafaring and exploration.

There are contemporary accounts, including The Surveying Voyage of HMS Flag by Captain R. N. Blackwood (1848) and An Account of the Natives of the Tonga Islands by William Mariner (1817), as well as more recent histories such as Vice Admiral Sir Archibald Day's The Admiralty Hydrographic Service 1795-1919 (1967). The great pioneers in the field, including James Cook and William Fitzwilliam Owen, are also represented. Many of the secondary texts in the collection are authors' signed copies and Rear Admiral Ritchie's own works are present, too, including Challenger: the Life of a Survey Ship (1957), a biography of the ship commanded by him on a celebrated voyage of 1951-1952.

The Robinson Collection comprises incunabula, medieval manuscripts and books so the material ranges from a fourteenth-century gradual to items published in the Nineteenth Century. The collection was bequeathed by Marjorie Robinson (d. 1998), widow of antiquarian bookseller, Philip Robinson. It includes early editions of works by Dante, Boccaccio and Tasso; rare pamphlets by Daniel Defoe and Jonathan Swift; and is a good resource for travel literature.

Highlights include an original Gutenberg Bible leaf [1400]; a book of hours which is printed on vellum, in a brown cloth binding with blue velvet spine and metal centerpiece, corner-pieces and ornamental clasp; presentation copies of Alexander Pope's works as well as books which he formerly owned and A letter from South Carolina, 2nd ed. (1718) which provides first-hand information on the pioneer settlement of that state.