'Extract of a letter of Dr. Atchison addressed to Colonel Sykes, dated Peshawar, 24 February 1850' in which he writes how he left Aurangabad to carry out Sykes' wishes for information about the Sulphur Range and the mineral hills around Peshawar. He has become well acquainted with the locality but cannot visit the range because of snow. He writes of the minerals that he has found and what would be necessary to mine and refine them. The letter describes also the geography and the inhabitants of the region.

'Extract of a letter from Dr Atchison, addressed to Colonel Sykes, dated Peshawar, 26 February 1850' in which he supplements his previous letter (RAS GOV7/30) with information about the 'Koree' and Khyber passes, the Jhelum river, the area around Rawal Pindee, and other geographical features on his journey.

'Extract of a letter from Lt. Pollock addressed to Colonel Sykes, dated Kohut, 30 March 1850' in which he writes about the salt mines of 'Malgeen'. These are one day's march from a place called Nakbund where sulphur ore can be obtained. Pollock describes his journey to the area and how the mine is not regularly worked. He has sent specimens to Peshawar for further analysis as his geological knowledge is not sufficient.