The 15th International Congress of Orientalists was held in Copenhagen in 1908. The material from this conference consists of two printed pamphlets: "Actes du Quinzième Congrès International des Orientalistes Session de Copenhague 1908" and "Appendice aux Actes du Quinzième Congrès International des Orientalistes Session de Copenhague 1908" detailing participants and programme for the Congress. These were published in Copenhagen in 1909.

The International Congress of Orientalists, initiated in Paris in 1873, was an international conference of Orientalists. It was later renamed as the International Congress of Human Sciences in Asia and North Africa and then as the International Congress of Asian and North African Studies. This material covers the interaction of the Royal Asiatic Society with the Congress in the time period 1889 to 1993.

Correspondence and official documentation for the Second International Congress of Anthropological and Ethnological Sciences held in Copenhagen from the 1-6 August, 1938. These are:

• "International Congress of Anthropological and Ethnological Sciences, Second Session, Copenhagen, 1938, Under the patronage of H.M. the King of Denmark and Iceland, Second Circular". Printed pamphlet detailing information about the Congress, the provisional programme, sections, excursion and including a form for Application for Membership at the Conference. Printed material.
• Letter from H.J. Braunholtz and M.L. Tildesley, British National Secretaries, International Congress of Anthropological and Ethnological Sciences, to remind about the forthcoming Congress and to ask to be informed as to whether the recipient would be attending and wishing to submit a paper or make proposals concerning the future of the Congresses. Typed, dated 23 May 1938.
• Letter from Colonel Hoysted, Secretary, Royal Asiatic Society, to the National Secretaries, International Congress of Anthropological and Ethnological Sciences, to inform that Professor J.L. Myres would represent the Society at the next Congress, that he will not be reading a paper, nor did the Society have any suggestions regarding the Congress. Typed, dated 7 June 1938.