Papers of Henry Solomon Wellcome, 1800-1985, comprising articles, publications, financial records, legal records, administrative documents, property details, probate records, marriage and divorce records, diaries, microfiche of letter books, details of events, subscription lists, field and geological reports, press cuttings, photographs, ephemera, objects, and family papers dating back to 1800.

Papers of Sir Wilfred Patrick Thesiger, 1946-1994, including lists of fossils, rocks and minerals collected in Arabia, 1947; copies of letters from Thesiger to various correspondents; route notebook from Kachu to Jalalabad, Nuristan, 28 Jul-4 Sep 1956; meteorological observations Rub al Khali, Arabia, 1947; tabulated traverse by draftsman for the 1949 expedition from Muwaiqih; loose notes and notebooks, 1947-1948; seating plan for Thesiger's 80th birthday dinner at the Royal Geographical Society, 6 Jun 1990; transcript of an interview with Thesiger for a Channel 4 television documentary, Heart of a Nomad, Aug 1994; appendices to an article by Thesiger, 'A New Journey in Southern Arabia' published in The Geographical Journal, Vol. 108, No. 4/6 (Oct-Dec, 1946), pp 129-145 and envelope containing notes of payments for camels and servants, South Arabia.