Correspondence and Papers written by Captain Thomas John Newbold between 1842 and 1849. The majority of the correspondence is from Newbold to Richard Clarke, the Secretary of the Royal Asiatic Society. The Papers were mainly sent by Newbold to be read at the Society or published in its Journal.

"The Bhuga of Mahanundi" A Paper sent by Newbold to the Royal Asiatic Society on thermal springs in South India. He gives their location and a detailed description. A note at the head of the paper in pencil reads "Read Jan 14th 1843". With the Paper is also a label, "Thermal Springs of Mahamandi by Capt Newbold, Read 14 January 1843".

"The Thermal Springs of Calna... S India by Capt Newbold F.R.S." in which Newbold writes of further discoveries of thermal springs other than those at Mahanundi (see TJN/2/1). A note states, "Recorded 16 June 1849".