18 black & white photographs documenting the Sesquicentenary Reception. Many show the Queen and the Duke of Edinburgh being introduced to other guests. Some of these have been mounted on card. Also 20 small photographic negatives.

16 black & white photographs of the Sesquicentenary Dinner with 3 further proof sheets.

Photographs from: 12 November 2008: Book launch for 'The Hidden Treasures of Timbuktu: Historic City of Islamic Africa' by Alida Jay Boye and John O. Hunwick, 6 images. 17 March 2010: Student Lecture Series, Kiku Day, a concert of the Shakuhachi (Japanese Bamboo Flute), 8 images.

• "Camberwell students of conservation working at RAS" - 12 colour 35mm slides, dated March 1989
• "Basement Strongroom 1990-1991 during MSS Boxing programme" - 9 colour 35 mm slides
• Rooms 1990 - 5 colour 35mm slides
• B&W photographs of rooms, 1992, 3.5 x 2.5cm, 25 items with 29 corresponding negatives
• Basement strongroom c. 1994 - 6 colour 35mm slides
• Third floor conservation studio c.1995 - 7 colour 35mm slides
• B&W photographs of conservation studio c.1995, 5 items, 17.8 x 12.5 cm
• "Photographs of Basement Strong Room 1990-1996, Boxes of MSS in Basement Strong Room 1994" - 25 B&W photographs, 3.5 x 2.5cm
• "Old Conservation studio (3rd floor) 1989-1996, Old basement strongroom 1988-1996 - 25 B&W photographs, 3.5 x 2.5cm with corresponding negatives
• Rooms at Queen's Gardens, 1997, 16 colour 35mm slides
• "RAS Queen's Gardens October 1997 - 16 B&W photographs, 3.5 x 2.5cm with corresponding negatives
• Colour photographs of rooms - 8 of 14.7 x 10cm, dated June 1999; 1 of 13.5 x 10cm, undated
• Colour photographs of rooms at Queen's Gardens, June 2005 - 5 of 17.8 x 12.5cm

Two very similar versions of B&W photographs of participants of the symposium, 8 copies. Includes the original negatives.

Digital photographs of early correspondence between the Société Asiatique and the Royal Asiatic Society. There are 24 images of 12 letters. With the images is a copy of an email from Jean-Michel Mouton to Alison Ohta, Director, Royal Asiatic Society, explaining about the photographs, dated 22 April 2022.

Miscellaneous Photographs, Plates and Illustrations used for Journal Articles. These include photographs of the tomb of I'timad Khan Khevayasara, Images of An Ancient Arabic Sphere, FIG 1-8 K42174 and Figs K47163 for unknown articles.

Two photographic negatives from G.L.M. Clauson's Paper on "A Hitherto Unknown Turkish Manuscript in "Uigher" Characters" published in the Society's Journal in January1928. With the negatives is the original envelope.

Material concerned with the administration of the Sesquicentenary celebrations including the Minutes of the Planning Committee Meetings.

Notifications, Agendas and Minutes of Meetings of the Sesquicentenary Planning Committee. Includes some signed minutes. The Sesquicentenary Committee was established to oversee the organisation of the celebrations. The first meeting was held on 27 November 1968. They continued to meet even after the Sesquicentenary to administer the funds and give a progress report. In the Minutes for 9 January 1975, it was noted that arrangements were approved for the dissolution of the Committee on 19 February 1975.