'Copy of a letter addressed to Capt. Reynolds by Dr W.H. Bradley, dated Camp [Humber, near Soulah], 25 January 1830' in which he asks Reynolds to pass on to Colonel Sykes the information he writes regarding the Aurangabad Caves. He then continues to provide the information and his opinion upon the caves.

'Copy of a letter addressed to Col. Sykes, East India House, by Dr. Impey, dated Indore, 10 June 1849' in which Impey writes that in the same mail he has sent Sykes a paper on the colossal Jain figure on the 'Satpoonah Range'. He is unable to decide which of the Jain figures it represents. The inscriptions to be found are in Sanskrit. He compares his discovery to that of Captain Vodel's written about in the Transactions of the Society. He also writes of visiting the caves at Awkya Tankye.

'Copy of a letter addressed to Col. Sykes by Capt. R. Gill, dated Jabneh, 29 March 1849' in which he writes of his latest series of paintings which comprise of copies of nearly all the paintings of the verandah of the caves except that which was supposed to be a representation of the zodiac, but which appeared to Gill as a representation of the states of man. Gill continues to describe the caves and their paintings, inscriptions and layout.

'Copy of a letter addressed to Colonel Sykes by Captain Kittoe (no place or date)' in which he writes that he has just returned from a tour along the bank of the Gandak. He has spent several months examining inscriptions made by Captain R.W. Ellis, Political Assistant in Bundelkund. He is currently having them translated into English. He is becoming convinced that ancient Pali was the first written character in Central India.

Kittoe also writes about the architectural details and sculpture discoveries that he has been making of both Buddhist and Brahmanical buildings giving descriptions of them and their inscriptions. There are also some pencil sketches with the copy of the letter to further aid his descriptions. He writes of having been in Allahabad as well as Bupau, Patna and back to the Benares (Varanasi) area.

This allied material consists of a set of preliminary transcripts of the original material, with articles that were given at the time of donation; a further note about the material concerning supplementary findings; and photocopies of the lists of finds (WCP/1/20, WCP/1/37, WCP/1/38 and WCP/1/39).