Letter from Henry Thomas Colebrooke to Nathaniel Wallich in which he thanks Wallich for Nepal seeds and for rock specimens sent to him. He gives details of how various seeds and plants are growing in England mentioning Sir Joseph Banks and Mr Lambert. Wallich has been elected to the Linnaean and Geological Societies. Colebrooke will pay his fees if Wallich will reimburse to Colebrooke's agent. Colebrooke thanks for interesting papers that Wallich has sent including Captain Webb's account concerning the Himalayan mountains. Handwritten, dated 22 April 1819, dated in Wallich's hand, received 8 October.

Letter from Henry Thomas Colebrooke to Nathaniel Wallich in which he describes the measures that he has taken to obtain an assistant for Wallich. He regrets the delay in Wallich receiving his publications. He remarks on geological specimens and asks Wallich to thank Capt. G. for the vocabulary of the Kunawar language and is unsure whether to deposit it in the Company's Library or that of the Royal Asiatic Society. He discusses his forestry plantations and the possibility of Wallich obtaining leave. He appends a memo concerning geological specimens. Handwritten, dated 27 July 1825, received 10 December 1825.

Letter from Joseph Hooker to Brian Houghton Hodgson. He apologises for the paper he is using as all his writing paper has been used up on the accompanying journal which will explain to Hodgson what he has been doing. He writes of his surprise at the geology of the Himalayas and that he has collected rhododendrons and seeds for his father. He is thinking of staying a day or two at Pemiongchi. He writes about [Chamamaya] being a splendid fellow. There is a list of his food requirements and he asks Hodgson to send [Burchess] and Co. if he thinks appropriate. Handwritten, 1 piece, undated [1848-1850].

Letter from Henry Thomas Colebrooke to Nathaniel Wallich, pleased to hear that Wallich has resumed his role at the Botanic Gardens and thanking Wallich for his responses to Colebrooke's previous inquiries. He thanks Wallich also for sending seeds and that the plants that he sent are doing well at Kew. He asks if more can be sent. Wallich will be proposed for the Linnean Society after the Easter break and can also be proposed to the Geological Society. Colebrooke is keen to promote study on the geology of India and states information that he would like to collect. Colebrooke is pleased that Wallich is in contact with Mr Alexander of the Cape of Good Hope. He is also contemplating whether the "Gayal" would be suitable cattle for Cape of Good Hope and England and is looking into the possibility of shipping some heifers and steers. Handwritten, dated 18 March 1818, with Wallich's dating, arrived 28 July by Marchioness of Ely, answered 29 July by [Oriton]

Letter from Henry Thomas Colebrooke to Nathaniel Wallich concerning publications that Colebrooke will forward to Wallich. He reiterates his request to send specimens direct to the Geological Society because of the cost incurred at the Custom House. Handwritten, dated 12 March 1821, received 30 August 1821.

Letter from Henry Thomas Colebrooke to Nathaniel Wallich to ask Wallich whether he would like the earlier volumes of the Geological Transactions to complete his set as they are available at modest terms. Colebrooke and Mr Lambert have had an interview to request an assistant for Wallich but, as yet, do not know the outcome. The specimens that Wallich sent are still undistributed and therefore Colebrooke suggests that Wallich apportions them to men of science in future. In a postscript Colebrooke mentions that Richardson is still sending publications to Wallich. Handwritten, dated 30 March 1824, received 29 September 1824.

Letter from Joseph Hooker to Brian Houghton Hodgson. He writes that he had last written to Hodgson on his way to meet the Rajah. They have left [bamsong] after Christmas after a final interview with the Dewan who had been extremely attentive. The Rajah had told Archibald Campbell that Hooker could start for [Lachen] in spring. Hooker had informed the Dewan that he was certainly going. Hooker does not foresee much difficulty, Campbell having given the Dewan a warning. Hooker writes that Campbell had insisted on one who speaks Hindustani and the only one was the heir apparent's servant. Hooker continues to report on the negotiations between Campbell and the Rajah. He then talks about the geology and vegetation of the area he is travelling through. With accompanying envelope. Handwritten, 4 sides, dated 28 December 1848.