There are three letters from David Lorimer to Sidney Duly and one letter from Emily Lorimer to Sidney Duly. There is a further letter from Duly to Richard Pankhurst, RAS Librarian, to donate the material to the Society

Letter from David Lockhart Robertson Lorimer to Sidney John Duly in which he writes of his journey to Bombay - a comfortable but dull voyage. In Bombay, Lorimer had met one of the [Chōa] Russian refugees with whom he had been previously corresponding. Lorimer describes being taken round the Bombay sights. Lorimer had received a deputation of Hunza men and from that secured a Hunza boy as a servant. Lorimer writes of the people he has secured for his expedition. They arrived at Srinagar on 31st March and within 24 hours were in a Hunza boat on the Jhelum. He writes that they have been variously received and as the "Times correspondent" has collected information from the highest and worst authoritative sources. He writes concerning the political situation. He has met a retired Indian Colonial Service man, Sir Ivo Elliot, who is friendly. Lorimer also describes the Prime Minister.
They are clothing and equipping themselves for the next stage. He has been corresponding with Gilgit with a view to having a man sent down from there. They hope to be in Gilgit by June. Sent from Srinagar. Kashmir, India, Handwritten letter, 3 pieces, 6 sides, dated 13 May 1934.

Letter from David Lockhart Robertson Lorimer to Sidney John Duly in which he reacts to Duly's letter. He then writes that they left Srinagar on 12 June, travelling by water and road. They reached the Burzil Pass on the 15th but found it was still snow covered, so had to climb on foot for most of it. He writes that neither he or Emily usually climb so nothing short of a miracle, perhaps of will, produced this achievement. A few days later, lower down, they were in a heat wave. They reached Gilgit on 1st July and he became sick on the 5th. On 11th they journeyed to Scimitar. He continues to describe the area. Lorimer is sending with the letters a Preface and the Burushaski Grammar.
Lorimer writes on his views on writing something "marvellous". He asks Duly whether he thinks there would be any interest in samples of soil, silt and grain. He would presume not as there is no commercial interest. Lorimer thanks for the monograph on Marbles and comments upon it and responds to other news that Duly had sent. In a postscript he apologises for the quality of the paper. Sent from Gilgit. Handwritten, 5 pieces, 6 sides, dated 8 September 1934.

Letter from Emily Overend Lorimer to Sidney John Duly to thank him for his delightful and entertaining letter which had cheered David in his illness. She asks that he will write again and that Duly will keep his letters from Lorimer as he rarely writes with freedom to anyone. Lorimer had been ill for five weeks with fever but is now recovering. The people are friendly and of goodwill and happy to talk about themselves, so she is hopeful of maximum information in the time available. She writes that they were delighted that Bunny could go with Duly to South Africa and to thank her for the postcard from Liverpool. She also writes that 'Lock' may send his Introductions to the 2 volumes of Bu, Grammar and Texts. Written from Aliabad, Hunza. Typed with handwritten annotations and signature, 2 pieces, 2 sides, dated 4 September 1934.

This series consists of correspondence between the Lorimers and Sidney Duly, manuscripts concerning the Gilgit Expedition; and some printed articles by the Lorimers. There is also a letter from Duly to Richard Pankhurst, RAS LIbrarian, to donate the material to the Royal Asiatic Society.

The material consists of two folders. The first contains correspondence, manuscripts and printed material connected to the Lorimers' expedition to the Gilgit-Baltistan region, Pakistan in 1934-1935. The second folder contains correspondence and notes provided by D.L.R. Lorimer in 1946, to aid Roland Carter, political agent in Gilgit and Carter's own notes.

Five articles written by and about Emily Overend Lorimer and David Lockhart Lorimer; four regarding their expedition to Gilgit; the fifth concerning Hitler's philosophy.

"Speakers of a Language that is, perhaps related to no other: The Burusho of Hunza - a Mountain People of Northern Kashmir". Illustrated article with accompanying photo-articles, "The Crafts and Husbandry of the Burusho: A Mountain People in the "Apex" of India", and "Domestic and Outdoor Life in Hunza: A Peasant Community whose Language is Unique" by Emily Overend Lorimer. Printed in The Illustrated London News, 19 October, 1935. 2 pieces, 3 sides, the fourth side has an article "2-M.P.H. Relics on Salt Flats on which Campbell reached 300 M.P.H."