For the 30th Congress the title was changed to the International Congress of Human Sciences in Asia and North Africa. The Congress was held in Mexico City in August 1976. Material concerned with this Congress is: * Letter from Marion Evans, Superintendent, Congress & Inclusive Tours, Lufthansa, to send the preliminary announcement and poster for the 30th International Congress of Human Sciences in Asia and North Africa. Typed, dated 11 March 1975.

• First Invitation to the Congress giving details of the sections, papers, trips and registration. Printed in Spanish, English and French, undated.
• Poster for the 30th Congress. Printed in Spanish, English and French, undated.
• Letters from Sabena Airlines and CP Air to the Royal Asiatic Society offering assistance in travel arrangements to the Congress. Two letters, typed, dated 20-23 May 1975.
• Letter from Jorge Alberto Lozoya, Secretary General, 30th Congress, to Royal Asiatic Society to ask whether the Society would assist in coordinating travel for groups of scholars to the Congress. Typed, dated 14 November 1975.
• Provisional Registration Form for the Congress. Printed in Spanish, English and French, undated, with accompanying envelope.
• Correspondence between Mrs J. Makowiecka and Mrs Crawford, Secretary, Royal Asiatic Society, concerning the contact details for the 30th Congress. Two letters, handwritten and typed, dated 11-15 December 1975.
• Correspondence between Dr J.G. de Casparis and Mrs Crawford, Secretary, Royal Asiatic Society, concerning Casparis being the Society's official representative at the Congress. Two letters, typed, dated 2-11 July 1976.
• Letter from L. Bazin, Secretary-General, International Union for Oriental and Asian Studies, to send the updated Constitution of the Union after the General Assembly held at the Mexico Congress. Typed in French with printed constitution in English and French, undated.

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.