The series consists of 38 letters from Joseph Dalton Hooker to Brian Houghton Hodgson. They have been organised mainly according to a previous listing made of the material, approximately by date.

Letter from Joseph Hooker to Brian Houghton Hodgson to say that he had arrived at [Zitaljah] the previous day. He agrees that all Hodgson says about Nepal is true. He discusses some publication and his relationship with Hodgson. Handwritten, 9 sides, dated 15 April 1850.

A set of three items which are copies of various letters from Brian Houghton Hodgson to his father, Brian (or Bryan) Hodgson (1766–1858) covering the period 1843-1844, particularly concerning Hodgson's disagreement with the policy of Lord Ellenborough concerning Nepal.

A series of manuscripts in which Hodgson explores some of his interests concerning the Indian sub-continent.

"Memorandum of Literary Topics in hand". Handbound notebook in which Hodgson has noted all the different areas of research in which he is interested. These include History of Nepal proper, History of the kingdom of Nepal, Religion - Buddhism - its origin - diffusion & decay, Extent & boundaries of Nepal, the Government, the Army of Nepal, the Law & Police, Church or Religious Body, Topography, Finances, Land tenures, Commerce, Letters, Literature and Languages, Population, Thibet, Economic substances, Agriculture, Manufactures, Rent - profit- wages, Zoology especially ornithology, Mines of Nepal, Tibet - extent and boundaries, Narrative of the relations of the British Govt with that of Nepal from the earliest times to the present. On the front cover of the notebook in addition to the title is a crossed out list of boxes continued to be stored at 157 [Teachurch] St. Handwritten, undated.

"Route from the plains to Nepal". A manuscript draft and notes on the geography and people of the area. Handwritten, 9 pieces, 21 sides, undated.

Draft Paper on the Kingdom of Nepal: Its languages, literature and religion. A draft paper in which Hodgson describes Nepal - the kingdom, the diversity of language and religion and the different peoples. Also some additional loose notes concerning vocabulary and distances. Handwritten, 10 pieces, 18 sides, undated.

"Notes taken in the Tarai, 7 January." Geographical notes made concerning the Tarai region of Nepal concerning its waters, hills, vegetation, etc. Handwritten, 4 pieces, 16 sides, undated.

"Commerce with the countries north of India". A paper written in reply to one given at the Society of Arts by Sir Douglas Forsyth on the possibilities of commerce with Sikkim, Nepal and Tibet, in which Hodgson points out his previous attempts to raise this issue and his opinions on the subject. Handwritten, 2 pieces, 7 sides, undated [1877, see BHH/5/41/1].

"Dr Wright's Sketch of Nepal. Calcutta Govt Press, 1872". Hodgson's notes taken from this article mainly concerning the history of Nepal. Handwritten, 2 pieces, 6 sides, undated (post 1872).